27
Quality Score
Niche
Fasten Timer
Low confidence
✍️ bumetric analysis
“
Fasten Timer is an iOS app from Christian Kirsch in the Health & Fitness category, currently rated 2.5★ across 2 ratings. Initial signal reads as mixed reviews: supporters praise core features while critics cite stability and value gaps.
Quality Score is 27: Niche (micro-niche or pre-traction stage). For a Health & Fitness app, that means micro-niche or pre-traction stage. 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
$867
per month
→
12-mo forecast
$758 – $2733
per month
→
24-mo forecast
$702 – $6321
per month
INDIE tier
💡 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
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Rating
—
Reviews
—
Forecast Revenue / mo
—
Snapshots tracked
0
since first record
ONE-TIME · BUILD💰 Estimated build cost
$105K
↳ What it cost to build · not monthly revenue
Likely range $80K – $140K
$25K · MVP floor$100K · indie scale$500K+ · studio build
📈Slow ROI — current MRR is well below build cost
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 |
| ⚙Health & Fitness complexity ×1.40 | +$20K |
| ⚙5.4y maintenance × ~1-person team | +$32K |
Total estimate$105K
🛠 Estimated tech stack
🍎
Native iOS (SwiftUI)
High confidence · 80%
Also possible
Native iOS (Swift / UIKit)
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 | 2 MB |
| 🏷Category context | Health & Fitness |
| 📦Compact iOS bundle | → Native SwiftUI (post-2020 era) |
💀 Maintenance status
Likely abandoned
95%
Last shipped 2021-04-20 · 1860 days ago
0 · Active50 · At risk100 · 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
| 📅5y+ since last update | Likely abandoned |
| 👥Small user base (2 ratings) + 5.4y old | +10% (solo-project pattern) |
VerdictLikely abandoned
🔬
How we forecast this revenue
LOW CONFIDENCEBaseline
$867/mo · ML-estimated from 234 triggers
Growth rate
+6.0% MoM · INDIE tier baseline (compound monthly)
Direction
Headwinds: rating drift may slow acquisition
6 months
$738 – $1.7K
12 months
$758 – $2.7K
24 months
$702 – $6.3K
Compound growth at +6.0% MoM (tier baseline for INDIE). Range widens with horizon — typical noise band ±40% at 6mo.. Ranges widen with horizon — distant futures carry more uncertainty.
📊
BU Investment Matrix
Pre-traction · 31/100INDIE TIERlimited signalRevenue Strength
2.9
Product Quality
2.0
Market Position
2.0
Growth Velocity
5.0
Defensibility
3.4
Operational Safety
5.0
Founder Strength
3.3
Monetization Maturity
1.0
- 💰 Revenue: Marginal — $346 - $2168/mo · INDIE tier · medium confidence, trajectory unclear.
- ⭐ Quality: 2.5★ across 2 reviews — weak — significant quality concerns.
- 📍 Market: Not yet charting in any of the 9 monitored markets.
- 📈 Growth: ⚠ last update 1860d ago — possibly dormant.
- ⚠️ Risk: Elevated — dormant (1860d since update).
🎯 For competitors: Vulnerable. Quality drift + slow updates create a clear opening for a fresh competitor with active dev cadence.
💵 For acquirers: Estimated asking range 18-32× monthly = $15K-$27K.
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:
| Paid app ($0.00)METRIC | +$2,800 | |
| Below-average rating (2.5★)METRIC | −$1,500 | |
| Established app (5y old)METRIC | +$800 | |
| Pre-traction phase (2 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.
App Specs
🔐 Own this app? Claim & verify MRR →💾 2 MB🔞 4+📱 iOS 14.0+🔖 v1.2🔄 updated 5y ago🌐 EN, DE📂 Health & Fitness💰 Paid🚀 Launched 2021 (5y old)
📝 About this app
Fasting Timer helps you to keep track of your intermittent fasting times. It allows you to easily adjust the start and the end of your fasting with just a single finger drag.
You can use Fasting Timer without having to create an account. All the data is yours and stays on your device!
Fasting Timer does not advice you to fast. It helps you if you decide this on your own. Please ask your doctor!
Features:
- Record your fasting times
- Easily adjust start and end times
- View and change your fasting history
- No account or profile is needed
- Uses only the local storage on your device… View full description on the official store →
You can use Fasting Timer without having to create an account. All the data is yours and stays on your device!
Fasting Timer does not advice you to fast. It helps you if you decide this on your own. Please ask your doctor!
Features:
- Record your fasting times
- Easily adjust start and end times
- View and change your fasting history
- No account or profile is needed
- Uses only the local storage on your device… View full description on the official store →
🆕 What's New · v1.2
- Date Picker integration for changing long interval easily, just press the start / stop date and time above the circular slider.
- Simplify fasting states: After stopping a fasting period, the timer can be restarted directly.… Full release notes →
- Simplify fasting states: After stopping a fasting period, the timer can be restarted directly.… Full release notes →
📅
What Worked™ · Development Pipeline
2 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 →
2025-09
⭐
Rating ↓ 4.00 → 2.50 (dropped 1.50★)
2021-12
🚀
First tracked snapshot — initial data captured
🌍
Multi-Country Performance
Available in 9 of 9 monitored markets| Market | Rating | Reviews | Current version |
|---|---|---|---|
| 🇺🇸 US | 2.5★ | 2 | 2.5★ this version |
| 🇬🇧 GB | 1★ | 1 | 1★ this version |
| 🇩🇪 DE | 2.33333★ | 3 | 2.33333★ this version |
| 🇫🇷 FR | 0★ | 0 | — |
| 🇯🇵 JP | 0★ | 0 | — |
| 🇨🇦 CA | 3★ | 2 | 3★ this version |
| 🇦🇺 AU | 0★ | 0 | — |
| 🇧🇷 BR | 0★ | 0 | — |
| 🇮🇳 IN | 0★ | 0 | — |
🔔
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Profile & Insights
Everything we know — and don't — about this app and its company.
Identification
- App name
- Fasten Timer
- Developer
- Christian Kirsch
- Bundle ID
- io.kirsch.fastingtimer
- App Store URL
- Open in App Store
- Category
- Health & Fitness
- Content rating
- 4+
- Languages
- EN, DE
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
- Verified revenue / mo
- Not found
- AI revenue estimate / mo
- Not found
- AI annual estimate
- Not found
- ML model estimate / mo
- $201/mo
- Top-grossing rank
- Outside top 100 in US Health & Fitness
- 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.
⭐Recent App Store Reviews1 latest · avg 4.0★ · 0% 5★ · 0% 1★
5★0 (0%)
4★1 (100%)
3★0 (0%)
2★0 (0%)
1★0 (0%)
+0 ratings/week
Top positive
★★★★☆ Good start
I really enjoy the simplicity of this app and totally appreciate the developer’s view on privacy. The only thing that would make this a five star app is having the ability to add a target end time which triggers a notification. Extra credit…
📈Ratings growth2 ratings+100% lifetimeShow 3-year history estimate ▾
Tracked (3 weeks) Pre-tracking estimate (36 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 analysis
Why low confidence: only 2 ratings · no founder-verified revenue (model estimate only) · revenue figure is directional only.
📌 Final verdict — read this before you trust the numbers above
Fasten Timer is a very early-stage iOS app in the health & fitness space with weak public traction — only 2 ratings, no founder-verified MRR, and not ranked in any monitored grossing chart. The app appears to be monetised, but public signals are too sparse for a precise revenue estimate.
Bottom line: treat all revenue, audience and acquisition-value numbers on this page as directional only — not founder-verified facts.
❓ Frequently Asked Questions
7 answers · auto-generated from this app's public dataHow much does Fasten Timer make per month?▴
Low-confidence model estimate. Fasten Timer has only 2 App Store ratings, so our revenue model has very little signal to work with — treat the ~$200/mo figure as directional only, not a verified MRR. No founder-verified revenue data is available for this app. See methodology for the formula and confidence bands.
What apps are like Fasten Timer?▴
Browse the full Health & Fitness 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 Fasten Timer built with?▴
Our heuristic places Fasten Timer on the Native iOS (SwiftUI) 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 (Swift / UIKit).
Is Fasten Timer still actively maintained?▴
Maintenance status: Likely abandoned (95% abandonment risk). Last shipped version was 5+ years ago. The risk score combines time-since-last-update with Editor's Choice / curated featuring + user-base maturity adjustments.
When was Fasten Timer last updated?▴
Fasten Timer last shipped a new version on 2021-04-20 — more than 5 year(s) ago. This is the date Apple / Google last accepted a new build, not a content-only push.
Who makes Fasten Timer?▴
Fasten Timer is published by Christian Kirsch 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 Fasten Timer's BU Score?▴
Fasten Timer has a BU Score of 27/100 (Niche). The score combines App Store rating, ratings count, monetization model and revenue signals calibrated against founder-verified MRR anchors. See the BU Score formula.