Comparison

inti light vs Heart Log

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

Head to head
About

inti light

This app enhances your wake-up experience by simulating sunlight to regulate your body's natural rhythm. It supports a more comfortable awakening and improved sleep quality. Requires a separate light alarm device to function.

Highlights
  • Sunrise simulation control
  • Energy light on/off and color adjustment
  • Counseling function
  • Automatic clock synchronization via Bluetooth
  • Light alarm status display
  • Operation guide
Features
Read full description

太陽のような明るさの光で快適な目覚めをサポートする 「光目覚まし inti4(インティフォー)」専用アプリです。 起床時に光を浴びる事で体内リズムが整い、快適な目覚めと質の高い夜の時間をサポートします。 すでに多くの方が光目覚ましを使って 朝が楽になっています。 別売りの光目覚ましinti4(インティフォー)本体が必要です。 【アプリ表示画面】 ・「光目覚まし設定」ダイアログ表示ボタン ・光目覚ましステータス ・intiライト操作(操作ガイド付き) ・「サポート」ダイアログ表示ボタン ・「その他設定」ダイアログ表示ボタン 【int4との連動】 inti4 (インティフォー)をこのアプリで動かすことが出来ます。 ・エナジーライトのオン/オフと色調の変更 ・サンライズの設定 ・カウンセリング機能 Bluetoothでのペアリングをすると本体の時計は スマホの時間に自動で設定されます。 ※ペアリングの際は、お手持ちのinti4の液晶が点滅します。 点滅しない場合は、再度接続ボタンを押してください。 照射データ記録に不具合が発生し、一時休止をしております。 今後とも、inti lightアプリをよろしくお願いいたします。

About

Heart Log

Track your blood pressure, heart rate, and weight daily. This app helps you manage your health with easy data entry, rest timers, and medication tracking. It also offers graphing and printing features for better health insights and doctor communication.

Highlights
  • Daily blood pressure and weight logging
  • Rest timer before measurement
  • Morning/night tally
  • Diverse analysis graphs
  • Medication and exercise checklist
  • Health app integration (HealthKit)
  • LAN data exchange
Read full description

Leaving hypertension intact will cause various diseases. To know and manage correct blood pressure, it is necessary to measure the blood pressure at home every day. This application records health, blood pressure, weight, lifestyle, etc everyday and controls health We will provide useful functions for communication with doctors. Health app INTEGRATION:  this app shows you the following data from the Health app (HealthKit). You can input your data manually, and the data is stored in the Health app.  Blood pressure  Heart rate  Body weight Feature:  Easy to fill  Rest time timer before measurement  Tally separately for morning and night  Three types of graphs that can be analyzed diversely  A checklist that can record medications and exercise  Comment function such as physical condition and living situation  Print function  You can check the function with sample data exchange data with other device's heart log via LAN communication( TCP/IP port 2020)  Calculation and Graphing of pulse pressure(PP) and mean blood pressure(MBP)

Screenshots

inti light4 screens
Heart Log4 screens

Verdict

The call

The clearest difference is review sentiment: Heart Log at 100% against inti light's 11%. inti light's advantage is ads (none vs shown) and monetization model (free vs ad-supported). On price, update cadence, in-app purchases and device support 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. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

inti light ships an update every 4 weeks, Heart Log every 3 weeks. The most recent releases landed on October 21, 2026 and October 24, 2026 respectively.

Scorecard4 real differences · 6 level
inti light versus Heart Log: the parameters behind the verdict, then further details
Parameterinti lightHeart Log
PriceFreeFree
Rating—3.0 (3 ratings) — better
Positive reviews10.8% of reviews100.0% of reviews — better
Number of ratings—3 — better
Update frequencyEvery 4 weeksEvery 3 weeks — better
AdsNo — betterYes
In-app purchasesNoNo
MonetizationFree — betterAd-supported
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS7.0 — better13.0
Further details — not scored
Size138 MB7 MB
Age rating4+12+
DeveloperMoon moon, Inc.Forty,Co.,Ltd.

Customer experience

inti light

Written reviews37 reviews
Positive10.8%
Neutral5.4%
Negative83.8%

Heart Log

All ratings3 ratings
Positive66.7%
Neutral0.0%
Negative33.3%
Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

inti light

No in-app purchases

None

Heart Log

No in-app purchases

Questions

Is inti light free?
inti light is free to download, with no in-app purchases.
Is Heart Log free?
Heart Log is free to download, with no in-app purchases.
Do inti light or Heart Log have ads?
Heart Log shows ads; inti light does not.
Which is updated more often, inti light or Heart Log?
inti light ships an update every 4 weeks, and Heart Log every 3 weeks. Most recently, inti light was updated on October 21, 2026 and Heart Log on October 24, 2026.

Other comparisons