# TempGrapher vs 20.20.20

The clearest difference is update cadence: 20.20.20 at weekly against TempGrapher's every 3 months. TempGrapher's advantage is review sentiment (27% vs 17%) and price ($0.99 vs $2.99). On rating, ratings volume, ads and in-app purchases there is nothing between them.

TempGrapher costs $0.99 and 20.20.20 $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 1.0 for TempGrapher against 1.0 for 20.20.20. Both are backed by a comparable volume of ratings — 1 and 2 respectively. Written reviews are what separate them: 27% of TempGrapher's written reviews are positive against 17% of 20.20.20's.

TempGrapher ships an update every 3 months, 20.20.20 weekly. The most recent releases landed on November 1, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | TempGrapher | 20.20.20 |
| --- | --- | --- |
| Price | **$0.99** | $2.99 |
| Rating | [1.0 (1 ratings)](https://appshunter.io/ios/app/tempgrapher/id501935336/reviews) | [1.0 (2 ratings)](https://appshunter.io/ios/app/202020-eye-care-and-tracker/id872763741/reviews) |
| Number of ratings | 1 | **2** |
| Positive reviews | **26.7% of reviews** | 16.7% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Weekly** |
| Monetization | Paid | Paid |
| Size | 6 MB | 36 MB |
| Requires iOS | **14.0** | 15.1 |
| Devices | iPhone, iPod | **iPhone, iPod, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [kazuhiko kuroda](https://appshunter.io/developer/460872954) | [AME Mobile Inc.](https://appshunter.io/developer/384838622) |

## What reviewers say

### TempGrapher

[App page](https://appshunter.io/ios/app/tempgrapher/id501935336)

Easily log your body temperature with a simple slider interface. View your temperature history as a line graph in both Celsius and Fahrenheit, with HealthKit support. Data is saved to your default calendar and can be shared via email or cloud services.

**Highlights:** Simple slider input for temperature, Celsius/Fahrenheit conversion, Line graph visualization, HealthKit integration, Calendar app data saving, CSV data export, Dark mode support

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### 20.20.20

[App page](https://appshunter.io/ios/app/202020-eye-care-and-tracker/id872763741)

This app helps you protect your vision from digital eye strain by reminding you to take breaks every 20 minutes. It features gamified wellness, progress tracking, and smart alerts to build healthy eye-care habits.

**Highlights:** 20.20.20 rule reminders, Gamified wellness system, Achievement system for motivation, Progress tracking, Smart haptic alerts, Customizable daily schedules, Dark Mode support

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is TempGrapher free?

TempGrapher costs $0.99, with no in-app purchases.

### Is 20.20.20 free?

20.20.20 costs $2.99, with no in-app purchases.

### Which has better reviews, TempGrapher or 20.20.20?

TempGrapher and 20.20.20 are both rated 1.0 out of 5 on the App Store, from 1 and 2 ratings respectively.

### Do TempGrapher or 20.20.20 have ads?

Neither TempGrapher nor 20.20.20 shows ads.

### Which is updated more often, TempGrapher or 20.20.20?

TempGrapher ships an update every 3 months, and 20.20.20 weekly. Most recently, TempGrapher was updated on November 1, 2026 and 20.20.20 on October 8, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*