CPR Tempo
47
Quality Score
Emerging
✍️ Bumetric analysis
“
CPR Tempo is an iOS app from Frozen Ape Pte. Ltd. in the Education category, currently rated 3.7★ across 75 ratings. Initial signal reads as mixed reviews: supporters praise core features while critics cite stability and value gaps.
Quality Score is 47: Emerging (early traction worth watching). For a Education app, that means early traction worth watching. The full BU Investment Matrix below scores 8 dimensions including monetisation, growth, and operational risk.
Track changes month-over-month in the Performance section below: live snapshot history and revenue forecast included.
💰 Monthly revenue · now vs forecast
● Right now
$5.0K
per month
→
12-mo forecast
$5.2K – $10.8K
per month
→
24-mo forecast
$6.4K – $19.2K
per month
MID tierFREE
💡 Grow this revenue
Free AI audit of this app’s store listing
- Title & subtitle keyword fit
- Description hook & conversion structure
- Screenshots, ratings, reviews strategy
Typical impact: +2-5× organic installs
📊 Performance Tracking LIVE
34 snapshots on record
Rating
3.7
Reviews
75 reviews
Forecast Revenue / mo
$5.0K
Snapshots tracked
34
since Jul 2013
ONE-TIME · BUILD
💰 Estimated build cost
$145K
↳ What it cost to build · not monthly revenue
Likely range $110K – $195K
$25K · MVP floor
$100K · indie scale
$500K+ · studio build
📈
Pays back in ~2.4y at current MRR
Synthetic estimate. Inputs: category complexity, file size, screen count, monetization layer, platform reach, age × team-size proxy. Calibrated against 2024-2026 indie-agency rate surveys. Full math + source list on /methodology.
Where the money goes
| 🧱 MVP baseline (design + 1-store ship) | +$28K |
| 📱 5 unique screens × $4.5K | +$22K |
| ⚙ Education complexity ×1.20 | +$10K |
| ⚙ 14.0y maintenance × ~1-person team | +$84K |
Total estimate
$145K
ONE-TIME · EXIT VALUE
💵 Estimated acquisition value
$75K
↳ What it would sell for · not monthly revenue
Marketplace range $50K – $100K · 16× MRR multiple
💸
~0.5× build cost (under-water)
Synthetic estimate. Multiple band derived from ad-supported + age, rating quality, category demand, and user-base maturity. Calibrated against 2024-2026 indie-app-marketplace closed-deal medians. Full math + comparable deal list on /methodology.
How the multiple was built
| 📺 Ad-supported base | 15× MRR |
| 📅 14.0y proven track record | +20% |
| ⭐ ★ rating 3.5-4.0 (mixed) | -8% |
| 🏷 Education category multiple | +6% |
| ⭐ Small user base (<1K ratings) | -8% |
Final multiple
16× MRR
🛠 Estimated tech stack
🍎
Native iOS (Swift / UIKit)
High confidence · 80%
Also possible
Native iOS (SwiftUI)
Heuristic guess from app bundle size, category, store description signals, and release-date stack era. Bumetric does not disassemble binaries — for binary-level certainty you would need an SDK intelligence tool or the manifest itself. Reasoning chain on the right. Full ruleset on /methodology.
Signals we read
| 📦 App bundle size | 11 MB |
| 🏷 Category context | Education |
| 📦 Compact iOS bundle | → Native Swift / UIKit (pre-2020 era) |
💀 Maintenance status
Likely abandoned
95%
Last shipped 2017-12-06 · 3226 days ago
0 · Active
50 · At risk
100 · Abandoned
Heuristic risk score from time-since-last-update + ratings velocity proxy + Editor's Choice / curated featuring signals. Calibrated against 2024-2025 app-store ranking decay reports. Not a guarantee — a quiet app with a healthy codebase looks the same as an abandoned one until something breaks. Full math on /methodology.
Risk signals
| 📅 8y+ since last update | Likely abandoned |
| 👥 Small user base (75 ratings) + 14.0y old | +10% (solo-project pattern) |
| • 14y old + 1y+ no update | +5% (API deprecation drift) |
Verdict
Likely abandoned
🔬
How we forecast this revenue
MEDIUM CONFIDENCEBaseline
$5.0K/mo · ML-estimated from 234 triggers
Growth rate
+4.0% MoM · MID tier baseline (compound monthly)
Direction
Headwinds: rating drift may slow acquisition
6 months
$4.7K – $7.9K
12 months
$5.2K – $10.8K
24 months
$6.4K – $19.2K
Compound growth at +4.0% MoM (tier baseline for MID). Range widens with horizon — typical noise band ±25% at 6mo.. Ranges widen with horizon — distant futures carry more uncertainty.
📊
BU Investment Matrix
Stalled · 38/100MID TIERFREE (NO MONETIZATION)no growth momentumRevenue Strength
3.7
Product Quality
2.5
Market Position
2.0
Growth Velocity
5.0
Defensibility
6.0
Operational Safety
6.2
Founder Strength
4.5
Monetization Maturity
0.5
- 💰 Revenue: Modest — $3K - $7K/mo · MID tier · medium confidence, trajectory unclear.
- ⭐ Quality: 3.72★ across 75 reviews — weak — significant quality concerns.
- 📍 Market: Not yet charting in any of the 9 monitored markets.
- 📈 Growth: ⚠ last update 3226d ago — possibly dormant.
- ⚠️ Risk: Moderate — dormant (3226d since update).
🎯 For competitors: Mixed picture. Worth competing if you have a clear UX or pricing edge — otherwise crowded segment.
💵 For acquirers: Estimated asking range 18-32× monthly = $90K-$160K.
Composite of 8 dimensions computed deterministically from public signals — no LLM, every score traces back to a measurable input. Default weights shown; "compete" / "acquire" / "invest" lenses re-weight without re-fetching.
Range:
💰 Forecast Revenue / mo
MODELRevenue forecast computed from BU's 234 trigger model on each snapshot. Calibrated against ground-truth from 58 verified-revenue apps.
🔬Forecast Breakdown — Why This Estimate?Top 4 of 4 triggers
Our ML model uses 200+ signals from public data. These are the most influential for this app:
| Mature app (14y old)METRIC | +$1,500 | |
| Ad-supported / freemiumMETRIC | +$600 | |
| Single-language (English only)METRIC | −$400 | |
| Pre-traction phase (75 ratings)METRIC | −$300 |
METRIC = structural app data · REVIEW = mined from user reviews · ✓ VERIFIED = Stripe-verified anchor (TrustMRR)
📈 Reviews Growth
LIVECumulative review count from first BU snapshot. Each point = a tracked update.
⭐ Rating Trend
LIVEAverage rating evolution. Updates with each new review batch.
🆕 What's New · v1.2
Updated to run on latest OS and devices.
Profile & Insights
Everything we know — and don't — about this app and its company.
Identification
- App name
- CPR Tempo
- Developer
- Frozen Ape Pte. Ltd.
- Bundle ID
- com.frozenape.cprtempo
- App Store URL
- Open in App Store
- Category
- Education
- Content rating
- 17+
- Languages
- EN
Company
- Website
- Not found
- Tagline
- Today
- Description
- Find apps and games for iPhone, iPad, Mac, and more on the App Store.
- Founded
- Not found
- HQ / Address
- Not found
- Employees
- Not found
- Logo
- Available
Revenue
- Reported revenue signal / mo
- Not found
- AI revenue estimate / mo
- Not found
- AI annual estimate
- Not found
- Model estimate / mo
- $5.0K/mo
- Top-grossing rank
- Outside top 100 in US Education
- All-time revenue
- Not found
- Pricing
- Not found
Founder
Founder data not yet collected for this app.
Funding
Funding data not yet collected for this app.
Press & Links
Press & Links data not yet collected for this app.
Contacts & Socials
Contacts & Socials data not yet collected for this app.
📈Ratings growth78 ratings+7700% lifetimeShow 3-year history estimate ▾
Tracked (34 weeks) Pre-tracking estimate (0 weeks) · model-based, ±5% noise · anchored to release date and current value
🌍Geographic ReachNot ranked
This app is currently outside the top 100 grossing in all 9 countries we monitor (US, UK, DE, FR, JP, CA, AU, BR, IN). Niche or new apps often launch this way — popularity rankings appear once daily revenue clears the regional threshold.
Profile is built from iTunes Lookup + developer site scrape + ML revenue model. Empty fields show "Not found" — additional sources (Crunchbase, X, IndieHackers, Acquire.com) coming.
📝 About this app
CPR Tempo provides audio and visual cues to aid the timing of chest compressions during cardiopulmonary resuscitation (CPR). Timers are also provided for rhythm checks after defibrillator shocking and for epinephrine administration.
The American Heart Association recommends a rate of 100 compressions per minute during CPR. This is difficult to maintain without audio cues, especially as the rescuer tires. ER nurse and Army Reservist MAJ Don Kyle shared with Frozen Ape about our metronome app Tempo is being used for this purpose.… View full description on the official store →
The American Heart Association recommends a rate of 100 compressions per minute during CPR. This is difficult to maintain without audio cues, especially as the rescuer tires. ER nurse and Army Reservist MAJ Don Kyle shared with Frozen Ape about our metronome app Tempo is being used for this purpose.… View full description on the official store →
App Specs
🔐 Own this app? Claim & verify MRR →💾 11 MB🔞 17+📱 iOS 8.2+🔖 v1.2🔄 updated 8y ago🌐 EN📂 Education💰 Paid🚀 Launched 2012 (14y old)
📅
What Worked™ · Development Pipeline
9 EVENTS TRACKEDDetected changes in this app over its tracked lifetime — each event links cause (what changed) to effect (what moved). Sorted newest first.See full history →Version history →
2026-05
🔄
Monetization changed: freemium → free
2026-05
📈
Crossed 10 ratings — social-proof flywheel kicking in
2026-05
⭐
Rating ↑ 3.00 → 3.72 (improved 0.72★)
2026-03
⭐
Rating ↓ 3.64 → 3.00 (dropped 0.64★)
2017-04
📈
Crossed 10 ratings — social-proof flywheel kicking in
2014-02
⭐
Rating ↑ 3.67 → 4.00 (improved 0.33★)
2013-11
⭐
Rating ↑ 3.00 → 3.67 (improved 0.67★)
2013-08
⭐
Rating ↑ 1.00 → 3.00 (improved 2.00★)
→ 30 days after: revenue +$103/mo · rating +2.00★ high confidence
2013-07
🚀
First tracked snapshot — initial data captured
→ 30 days after: revenue +$103/mo · rating +2.00★ high confidence
🗣
Voice of Customer
Based on 42 reviews across 2 markets● 76% positive · ● 7% neutral · ● 17% negative · Rating drift: -0.10★ (declining — recent 50: 3.62★ vs lifetime: 3.72★)
Sentiment by country (−1 to +1)
🇺🇸 US
+0.52
🇬🇧 GB
+0.41
Top praise themes
please update ×7 update please ×4 new ios ×3 code ×7 work ×5 features ×5 only ×5 minutes ×5
Top complaint themes
sound ×9 please ×6 work ×5 terrible ×4 update ×4 ios ×4 now ×3 noise ×3
🌍
Multi-Country Performance
Available in 9 of 9 monitored markets| Market | Rating | Reviews | Current version |
|---|---|---|---|
| 🇺🇸 US | 3.69231★ | 78 | 3.69231★ this version |
| 🇬🇧 GB | 3.68421★ | 19 | 3.68421★ this version |
| 🇩🇪 DE | 4.125★ | 8 | 4.125★ this version |
| 🇫🇷 FR | 5★ | 2 | 5★ this version |
| 🇯🇵 JP | 3.4★ | 10 | 3.4★ this version |
| 🇨🇦 CA | 3.42105★ | 19 | 3.42105★ this version |
| 🇦🇺 AU | 3.3125★ | 16 | 3.3125★ this version |
| 🇧🇷 BR | 2★ | 6 | 2★ this version |
| 🇮🇳 IN | 0★ | 0 | — |
🔔
Track this app’s revenue
FREEGet an email when revenue moves by your threshold. No spam, unsubscribe in one click.
📝 Description
95
BU Score · Transcendent
More by Frozen Ape Pte. Ltd.
View all →📦 Portfolio summaryINDIE studio
4apps·$23K/mocombined
✓ Diversified — top app contributes 35%; risk spread across portfolio
About this analysis
Why low confidence: only 75 ratings · no founder-verified revenue (model estimate only) · revenue figure is directional only.
❓ Frequently Asked Questions
9 answers · auto-generated from this app's public dataHow much does CPR Tempo make per month?▴
Based on our ML-calibrated revenue forecast, CPR Tempo earns approximately $5.0K/mo. This is a US-storefront-equivalent estimate; global revenue can be several times larger for internationally-distributed apps. See the methodology page for the full formula and confidence bands.
Is CPR Tempo profitable?▴
With estimated build cost $145K and monthly revenue $5.0K, CPR Tempo looks break-even-grade — payback period sits around 2.4 years. Profitability also depends on paid-acquisition spend and refund rate which the public model doesn't see.
What apps are like CPR Tempo?▴
Browse the full Education category catalog to find similar apps with revenue, build cost, audience and tech stack data. Each /p/{slug} page also shows a Compare side-by-side widget with three peer apps from the same niche.
What is CPR Tempo built with?▴
Our heuristic places CPR Tempo on the Native iOS (Swift / UIKit) stack (High confidence, 80%). Signals: app bundle size, category context, store-description markers, release-date era. We don't disassemble binaries. Alternative possibilities: Native iOS (SwiftUI).
Is CPR Tempo still actively maintained?▴
Maintenance status: Likely abandoned (95% abandonment risk). Last shipped version was 8+ years ago. The risk score combines time-since-last-update with Editor's Choice / curated featuring + user-base maturity adjustments.
How much would CPR Tempo sell for?▴
Estimated acquisition value: $75K (marketplace range $50K – $100K). Calculated as 16× monthly revenue using the standard multiple for the detected monetization model + adjustments for age, rating quality and category demand. Calibrated against 2024-2026 Flippa / Acquire.com / MicroAcquire closed-deal medians.
When was CPR Tempo last updated?▴
CPR Tempo last shipped a new version on 2017-12-06 — more than 8 year(s) ago. This is the date Apple / Google last accepted a new build, not a content-only push.
Who makes CPR Tempo?▴
CPR Tempo is published by Frozen Ape Pte. Ltd. on the Apple App Store. See the full publisher portfolio (other apps by the same developer) via the More by developer block on the product page above.
What is CPR Tempo's BU Score?▴
CPR Tempo has a BU Score of 47/100 (Emerging). The score combines App Store rating, ratings count, monetization model and revenue signals calibrated against founder-verified MRR anchors. See the BU Score formula.