Comparison

PeakflowLogger vs Peak Flow Log

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

Head to head
About

PeakflowLogger

Easily log and monitor your peak flow measurements to manage asthma and respiratory health. Visualize trends with color-coded zones and receive daily reminders. Securely sync data with healthcare providers.

Highlights
  • Peak flow measurement logging
  • Trend analysis charts
  • Color-coded health zones
  • Multiple user profiles
  • Daily measurement reminders
  • iCloud sync and data sharing
Features
Read full description

PeakFlow Logger is your essential companion for managing asthma and respiratory health. With an intuitive interface and powerful features, it helps you track peak flow measurements and monitor your respiratory wellness. Key Features: • Easy peak flow measurement logging • Beautiful charts and trend analysis • Color-coded zones (green, yellow, red) for quick health assessment • Multiple user profiles for family management • Daily measurement reminders • iCloud sync and data sharing with healthcare providers • Support for all peak flow meter types • Available in 10 languages Perfect for: - Asthma patients - COPD patients - Healthcare providers - Parents monitoring children's asthma - Anyone tracking respiratory health Medical Resources: Access trusted medical information about peak flow monitoring and asthma management from reputable sources. Privacy & Security: Your health data stays private and secure with iCloud encryption. Share data only with those you choose.

About

Peak Flow Log

Record your peak flow readings and visualize your asthma zones. Log reliever puffs, symptoms, and triggers to track trends and generate PDF reports for your doctor. Your data stays private and works offline.

Highlights
  • Visualize asthma zones (Green, Yellow, Red)
  • Log reliever puffs, symptoms, and triggers
  • Track trends over time
  • Create shareable PDF reports
  • Offline functionality
  • Multi-user support
Features
Read full description

Peak Flow Log turns your daily peak-flow reading into a clear picture you and your doctor can act on. Blow into your own peak-flow meter, type in the number (or your three blows — the best is kept), and the app instantly shows your zone as a percentage of your personal best: - GREEN, YELLOW or RED at a glance, based on your own numbers - Log reliever (rescue) inhaler puffs, symptoms and triggers in one tap - Morning and evening reminders that stay quiet on days you've already logged - Write your peak flow and reliever puffs to Apple Health - See your trend over time with clear color-coded zone bands - Track more than one person, so parents can follow their child too - Create a clean PDF report to share at every appointment Pro (one-time purchase, no subscription): - Doctor PDF with morning–evening variability and your action plan - Your own action plan: write what your doctor told you to do in each zone and see it the moment a reading lands there - Reliever doses left: your canister counts down from the puffs you already log, with a warning before it runs out - Home-screen widget with your latest zone and whether you've logged today - Unlimited profiles, full 90-day and all-time trends, trigger insights, custom zone thresholds Built to be trustworthy: - Works fully offline. No account, no sign-in. - Your data stays on your device. Nothing is uploaded. Health is write-only — the app never reads your Health data. - Export and import a backup so you never lose your history when changing phones. Peak Flow Log records and visualizes readings you take with your own meter. It does not diagnose, treat, or provide medical advice, and it is not a medical device. Zones are based on a percentage of your personal best that you or your clinician set, and the action plan is text you enter yourself. Always follow the asthma action plan given by your doctor, and seek medical help in an emergency.

Screenshots

PeakflowLogger4 screens
Peak Flow Log4 screens

Verdict

The call

The clearest difference is review sentiment: PeakflowLogger at 100% against Peak Flow Log's 0%. PeakflowLogger also leads on update cadence (weekly vs every 3 weeks). Peak Flow Log's advantage is price (Free vs $0.99) and ads (none vs shown). On in-app purchases, monetization model, 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

Peak Flow Log is free to download; PeakflowLogger costs $0.99 up front. PeakflowLogger sells 1 one-off in-app purchase and Peak Flow Log sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

PeakflowLogger ships an update weekly, Peak Flow Log every 3 weeks. The most recent releases landed on October 30, 2026 and November 6, 2026 respectively.

Scorecard4 real differences · 6 level
PeakflowLogger versus Peak Flow Log: the parameters behind the verdict, then further details
ParameterPeakflowLoggerPeak Flow Log
Price$0.99Free — better
Rating—3.0 (1 ratings) — better
Positive reviews100.0% of reviews — better0.0% of reviews
Number of ratings—1 — better
Update frequencyWeekly — betterEvery 3 weeks
AdsYesNo — better
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad — betteriPhone
Requires iOS18.217.0 — better
Further details — not scored
Size3 MB3 MB
Age rating12+4+
DeveloperOT Consulting UGYoshifumi Sato

Customer experience

PeakflowLogger

Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Peak Flow Log

All ratings1 ratings
Positive0.0%
Neutral100.0%
Negative0.0%
Written reviews1 reviews
Positive0.0%
Neutral100.0%
Negative0.0%

In-app purchases

1 purchases

PeakflowLogger

One-time1
  • Remove Ads$1.99
1 purchases

Peak Flow Log

One-time1
  • Peak Flow Log Pro$3.99

Questions

Is PeakflowLogger free?
PeakflowLogger costs $0.99, and also offers in-app purchases.
Is Peak Flow Log free?
Peak Flow Log is free to download, with in-app purchases available.
Do PeakflowLogger or Peak Flow Log have ads?
PeakflowLogger shows ads; Peak Flow Log does not.
Which is updated more often, PeakflowLogger or Peak Flow Log?
PeakflowLogger ships an update weekly, and Peak Flow Log every 3 weeks. Most recently, PeakflowLogger was updated on October 30, 2026 and Peak Flow Log on November 6, 2026.

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