48
Quality Score
Emerging
Guardian Monitor
✍️ bumetric analysis
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Guardian Monitor is an iOS app from Kacper Rychlinski in the Education category, currently rated 4.0★ across 52 ratings. Initial signal reads as largely positive sentiment, users highlighting consistency and feature depth.
Quality Score is 48: 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.
💰 Revenue · today and ahead
Today
$2.1K/mo
In 12 months
$1.8K – $6.7K
In 24 months
$1.7K – $15.4K
INDIE 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
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Rating
—
Reviews
—
Forecast Revenue / mo
—
Snapshots tracked
0
since first record
🔬
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 · 32/100INDIE TIERFREE (NO MONETIZATION)limited signalRevenue Strength
3.3
Product Quality
1.7
Market Position
2.0
Growth Velocity
5.0
Defensibility
3.0
Operational Safety
6.8
Founder Strength
3.0
Monetization Maturity
0.5
- 💰 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: dev shipping weekly.
- ⚠️ Risk: Moderate — rating drift -0.82 ★ (recent 50 vs lifetime).
🎯 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.
🗣
Voice of Customer
Based on 63 reviews across 6 markets● 52% positive · ● 16% neutral · ● 32% negative · Rating drift: -0.82★ (declining — recent 50: 3.16★ vs lifetime: 3.98★)
VADER compound sentiment per quarter (−1 = fully negative, +1 = fully positive). Each point ≥ 5 reviews.
Sentiment by country (−1 to +1)
🇯🇵 JP
+0.59
🇬🇧 GB
+0.49
🇺🇸 US
+0.37
🇦🇺 AU
+0.24
🇩🇪 DE
-0.01
🇫🇷 FR
-0.03
Top praise themes
apple watch ×16 blood glucose ×3 lock screen ×3 mise jour ×3 medtronic ×21 thank ×11 carelink ×10 data ×10
Top complaint themes
apple watch ×4 fonctionne plus ×3 und ×12 login ×7 log ×6 working ×6 nicht ×6 die ×6
Risk signals
Bug mentions: 3%
🌍
Multi-Country Performance
Available in 9 of 9 monitored markets| Market | Rating | Reviews | Current version |
|---|---|---|---|
| 🇺🇸 US | 3.98077★ | 52 | 3.98077★ this version |
| 🇬🇧 GB | 4.2★ | 20 | 4.2★ this version |
| 🇩🇪 DE | 3.96429★ | 28 | 3.96429★ this version |
| 🇫🇷 FR | 3.28571★ | 7 | 3.28571★ this version |
| 🇯🇵 JP | 4.34999★ | 20 | 4.34999★ this version |
| 🇨🇦 CA | 3.25★ | 4 | 3.25★ this version |
| 🇦🇺 AU | 3.875★ | 16 | 3.875★ this version |
| 🇧🇷 BR | 4.25★ | 8 | 4.25★ this version |
| 🇮🇳 IN | 0★ | 0 | — |
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.
App Specs
🔐 Own this app? Claim & verify MRR →💾 36 MB🔞 4+📱 iOS 15.0+🔖 v1.6.5🔄 updated 4d ago🌐 CS, NL, EN, FI, FR +10📂 Education💰 Free🚀 Launched 2022 (4y old)
📝 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 →
🆕 What's New · v1.6.5
- Option to show the glucose statistics chart on the home screen
- Fixed a rare chart refresh issue
- Fixed a rare chart refresh issue
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
- OG image
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
- 🇧🇷#70 /100 🇩🇪#82 /99 🇯🇵#93 /97
- 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 Reviews22 latest · avg 3.59★ · 59.1% 5★ · 27.3% 1★
5★13 (59%)
4★0 (0%)
3★2 (9%)
2★1 (5%)
1★6 (27%)
+1 ratings/week
Praise: great ×5 love ×3 perfect ×2 fantastic ×2 recommend ×1
Top positive
★★★★★ Awesome app!
So happy to have an app for my watch!
Now need assistance… I cannot download the widget! Help!…
★★★★★ Finally! So Happy!
I never write reviews about apps, but I have been waiting for YEARS for this. So I’m compelled to share.
It’s been less than 20 minutes with this app and it has saved me from switching pump companies.
I’ve got it on my Apple Watch with …
Top negative
★☆☆☆☆ Frustrating
Can't log in and now way to ask to reset my password 🥴…
★☆☆☆☆ I can’t get in
I have been trying to get into the account for 30 minutes. The two factor authentication process isn’t working. It sends me a number but that number never unlocks the app. I’m so frustrated and at my wit’s end.…
📈Ratings growth52 ratings+5100% lifetimeShow 3-year history estimate ▾
Tracked (21 weeks) Pre-tracking estimate (37 weeks) · model-based, ±5% noise · anchored to release date and current value
🌍Top Countries — Grossing Rank3 countries
🇧🇷BR#70 /100
🇩🇪DE#82 /99
🇯🇵JP#93 /97
📊Category Rank Trajectory#70 now · best #65 · worst #100
Lower line = better rank · Estimate from ratings growth model · Lower position on chart = worse rank · Higher = top of chart
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.
Full revenue analysis
Read the article-style breakdown for Guardian Monitor: category rank, percentile, growth signal, comparable apps, and how the forecast is calibrated against verified-MRR anchors in this niche.