Guardian Monitor
53
Quality Score
Solid
Guardian Monitor
Low confidence
✍️ bumetric analysis
“
Guardian Monitor is an iOS app from Kacper Rychlinski in the Education category, currently rated 4.0★ across 52 ratings. Initial signal reads as mostly critical sentiment so far: users flag rough edges and unmet expectations.
Quality Score is 53: Solid (established niche player). For a Education app, that means established niche player. 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
$2.1K
per month
→
12-mo forecast
$1.8K – $6.7K
per month
→
24-mo forecast
$1.7K – $15.4K
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
Loading…
Rating
—
Reviews
—
Forecast Revenue / mo
—
Snapshots tracked
0
since first record
ONE-TIME · BUILD
💰 Estimated build cost
$60K
↳ What it cost to build · not monthly revenue
Likely range $45K – $80K
$25K · MVP floor
$100K · indie scale
$500K+ · studio build
📈
Pays back in ~2.3y 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 |
Total estimate
$60K
ONE-TIME · EXIT VALUE
💵 Estimated acquisition value
$30K
↳ What it would sell for · not monthly revenue
Marketplace range $20K – $35K · 14× 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 |
| ⭐ ★ rating 3.5-4.0 (mixed) | -8% |
| 🏷 Education category multiple | +6% |
| ⭐ Small user base (<1K ratings) | -8% |
Final multiple
14× MRR
🔬
How we forecast this revenue
MEDIUM CONFIDENCEBaseline
$2.1K/mo · ML-estimated from 234 triggers
Growth rate
+6.0% MoM · INDIE tier baseline (compound monthly)
Direction
Headwinds: rating drift may slow acquisition, low defensibility moat
6 months
$1.8K – $4.2K
12 months
$1.8K – $6.7K
24 months
$1.7K – $15.4K
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 · 38/100INDIE TIERlimited signalGrowth Velocity
5.0
Founder Strength
3.0
Product Quality
3.2
Revenue Strength
3.3
Monetization Maturity
1.0
Defensibility
3.0
Market Position
2.0
Operational Safety
10.0
- 💰 Revenue: Modest — $846 - $5287/mo · INDIE tier · medium confidence, trajectory unclear.
- ⭐ Quality: 3.98★ across 52 reviews — weak — significant quality concerns.
- 📍 Market: Not yet charting in any of the 9 monitored markets.
- 📈 Growth: Insufficient signal to assess trajectory.
- ⚠️ Risk: Low — no material risk signals detected.
🎯 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 = $38K-$67K.
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 5 of 5 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 | |
| Multilingual (15 languages)METRIC | +$1,500 | |
| slowREVIEW | −$1,200 | |
| Established app (4y old)METRIC | +$800 | |
| Pre-traction phase (52 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 · v1.6.6
iPhone and iPad:
- latest glucose reading shown in a tile with a background color that highlights out-of-range values
- full-screen mode with the clock in the title bar
- latest glucose reading shown in a tile with a background color that highlights out-of-range values
- full-screen mode with the clock in the title bar
Profile & Insights
Everything we know — and don't — about this app and its company.
Identification
- App name
- Guardian Monitor
- Developer
- Kacper Rychlinski
- Bundle ID
- pl.krychlinski.diabetes.GuardianMonitor
- App Store URL
- Open in App Store
- Category
- Education
- Content rating
- 4+
- Languages
- CS, NL, EN, FI, FR, DE, HU, IT, PL, PT, RU, ES, SV, ZH, TR
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
- $2.1K/mo
- Top-grossing rank
- 🇯🇵#92 /98
- 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 growth52 ratings+5100% lifetimeShow 3-year history estimate ▾
Tracked (28 weeks) Pre-tracking estimate (36 weeks) · model-based, ±5% noise · anchored to release date and current value
🗺️Geographic Distribution1 of 9 markets
🇯🇵
JP
Top-grossing rank: #92 / 98
Other markets
Outside top 100
in US, GB, DE, FR, JP, CA, AU, BR, IN
in US, GB, DE, FR, JP, CA, AU, BR, IN
This app currently ranks in only one of the 9 markets we monitor. Niche or regional apps often launch this way before global rollout. Rankings update daily.
📊Category Rank Trajectory#92 now · best #87 · worst #98
Lower line = better rank · Estimate from ratings growth model · Lower position on chart = worse rank · Higher = top of chart
🚀Version Release Timeline2 releases tracked
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
Note: This app is for informational purposes only and should not be used to make medical decisions.
Guardian Monitor displays glucose data from supported CGM services without modifying any settings in the original app.
To use the app, you need an account with the original CGM service, as authorization is required for it to function.
Guardian Monitor enhances standard functionality with additional features such as a custom alarm system and voice readouts of glucose levels.
It can also run in the background by playing a standby sound that turns into an alarm when necessary.… View full description on the official store →
Guardian Monitor displays glucose data from supported CGM services without modifying any settings in the original app.
To use the app, you need an account with the original CGM service, as authorization is required for it to function.
Guardian Monitor enhances standard functionality with additional features such as a custom alarm system and voice readouts of glucose levels.
It can also run in the background by playing a standby sound that turns into an alarm when necessary.… View full description on the official store →
App Specs
🔐 Own this app? Claim & verify MRR →💾 36 MB🔞 4+📱 iOS 15.0+🔖 v1.6.6🔄 updated 0d ago🌐 CS, NL, EN, FI, FR +10📂 Education💰 Free
📅
What Worked™ · Development Pipeline
7 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
📈
Crossed 50 ratings — social-proof flywheel kicking in
2026-05
🔄
Monetization changed: paid → free
2026-03
⭐
Rating ↑ 3.59 → 3.93 (improved 0.34★)
2022-04
📈
Crossed 10 ratings — social-proof flywheel kicking in
2022-04
⭐
Rating ↓ 4.43 → 4.00 (dropped 0.43★)
2022-04
⭐
Rating ↓ 5.00 → 3.67 (dropped 1.33★)
2022-03
🚀
First tracked snapshot — initial data captured
🌍
Multi-Country Performance
Available in 9 of 9 monitored markets| Market | Rating | Reviews | Current version |
|---|---|---|---|
| 🇦🇺 AU | 3.875★ | 16 | 3.875★ this version |
| 🇧🇷 BR | 4.25★ | 8 | 4.25★ this version |
| 🇨🇦 CA | 3.25★ | 4 | 3.25★ this version |
| 🇩🇪 DE | 3.96429★ | 28 | 3.96429★ this version |
| 🇫🇷 FR | 3.28571★ | 7 | 3.28571★ this version |
| 🇬🇧 GB | 4.2★ | 20 | 4.2★ this version |
| 🇮🇳 IN | 0★ | 0 | — |
| 🇯🇵 JP | 4.34999★ | 20 | 4.34999★ this version |
| 🇺🇸 US | 3.98077★ | 52 | 3.98077★ this version |
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📝 Description
95
BU Score · Transcendent
About this analysis
Why low confidence: only 52 ratings · no founder-verified revenue (model estimate only) · revenue figure is directional only.
❓ Frequently Asked Questions
4 answers · auto-generated from this app's public dataHow much does Guardian Monitor make per month?▴
Based on our ML-calibrated revenue forecast, Guardian Monitor earns approximately $2.1K/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.
What apps are like Guardian Monitor?▴
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.
Who makes Guardian Monitor?▴
Guardian Monitor is published by Kacper Rychlinski 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 Guardian Monitor's BU Score?▴
Guardian Monitor has a BU Score of 53/100 (Solid). The score combines App Store rating, ratings count, monetization model and revenue signals calibrated against founder-verified MRR anchors. See the BU Score formula.