Comparison

Feverchart vs Ondi

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Feverchart

Features
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Feverchart helps parents keep track of their children's temperature history – simple, clear, and secure. Record temperature measurements directly in the app and see at a glance how the fever develops over time. With the PDF export, you can easily share the fever history with your pediatrician. Features: • Record and manage temperatures – Log measurements quickly and easily • Create multiple profiles – Ideal for families with several children • Weekly overview – Keep an eye on the fever trend • PDF export for doctor visits – Share fever history with physicians • Siri integration – “Hey Siri, Moritz has 38.2 degrees” • iCloud sync – Your data stays safe across all your devices Whether it’s a single fever episode or a longer illness – with Feverchart, you always have the full picture. Your data stays private: All information is securely stored on your device and in your iCloud.

About

Ondi

Features
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Private period tracking, with daily logs and cycle history on your device. No account required. Ondi learns your unique cycle and gives you personalised insights that get smarter with every log. WHAT'S FREE — ALWAYS • Period tracking with automatic cycle detection • Daily logging: flow, mood, energy, sleep, symptoms • Cycle predictions that improve over time • Calendar with cycle history • Cycle irregularity alerts UNLOCK EVERYTHING (one-time purchase) • Fertility tracking: temperature, cervical mucus, ovulation tests • Contraception side effect matching • Headache and migraine pattern detection • PMS prediction and sleep analysis • Exercise guidance tailored to your cycle phase • Trying to Conceive mode with timing insights • Pregnancy mode: week-by-week guidance and due date • Postpartum recovery tracking • Data export for doctor appointments PRIVACY FIRST Your logs are stored on your device. Ondi does not operate a server for your health records or use tracking analytics. Apple Health access is optional, and you choose when to export or share a report. Copies you export and data stored in Apple Health are managed separately. EVERY STAGE OF YOUR JOURNEY From first periods to menopause, Ondi adapts. Perimenopause pattern detection, postpartum period return guidance, and breastfeeding-aware insights — all explained in plain language. WORKS WITH APPLE WATCH Reads wrist temperature and heart rate data from Apple Health to enhance predictions without manual tracking. Ondi is not a medical device and should not be used as contraception. Predictions are estimates. Always consult a healthcare provider for medical decisions.

Screenshots

Feverchart4 screens
Ondi4 screens

Verdict

The call

The clearest difference is in-app purchases: Feverchart at none against Ondi's 1. On price, ads, device support and iOS requirement there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Ondi sells 1 one-off in-app purchase. Feverchart asks for nothing beyond the download.

Scorecard1 real difference · 5 level
Feverchart versus Ondi: the parameters behind the verdict, then further details
ParameterFeverchartOndi
PriceFreeFree
Update frequency—Weekly
AdsNoNo
In-app purchasesNo — betterYes
DevicesiPhone, iPadiPhone, iPad
Requires iOS17.417.0 — better
Further details — not scored
Size4 MB10 MB
Age rating4+12+
DeveloperChristoph PagelerBlue Flame Games

In-app purchases

None

Feverchart

No in-app purchases

1 purchases

Ondi

One-time1
  • Cyla Premium$7.99

Questions

Is Feverchart free?
Feverchart is free to download, with no in-app purchases.
Is Ondi free?
Ondi is free to download, with in-app purchases available.
Do Feverchart or Ondi have ads?
Neither Feverchart nor Ondi shows ads.

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