# Body Temperature Memo vs NightRing

The clearest difference is in-app purchases: Body Temperature Memo at none against NightRing's 6. Body Temperature Memo also leads on device support (3 vs 1) and iOS requirement (13.0 vs 17.0). NightRing's advantage is update cadence (every 6 weeks vs every 3 months). On price and ads there is nothing between them.

Both are free to download. NightRing sells 6 in-app purchases, starting at $1.49 per month. Body Temperature Memo asks for nothing beyond the download.

Body Temperature Memo ships an update every 3 months, NightRing every 6 weeks. The most recent releases landed on October 29, 2026 and November 1, 2026 respectively.

## The numbers

| Metric | Body Temperature Memo | NightRing |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (1 ratings)](https://appshunter.io/ios/app/body-temperature-memo/id1508497110/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 66.7% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 3 months | **Every 6 weeks** |
| Monetization | Ad-supported | — |
| Size | 42 MB | 6 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Shigeo Fukuda](https://appshunter.io/developer/1282972116) | [Hiroyuki Kako](https://appshunter.io/developer/1581721316) |

## What reviewers say

### Body Temperature Memo

[App page](https://appshunter.io/ios/app/body-temperature-memo/id1508497110)

Easily record and track body temperature readings from your thermometer. Visualize trends with graphs and a calendar view, and add notes for medical conditions or appointments. Supports multiple profiles for family members.

**Highlights:** Record body temperature easily, Calendar view for temperature changes, Daily average temperature display, Graph visualization, Multiple user profiles, Text memo function, Supports second decimal place

**Features:** Vision Pro support

**In-app purchases:** none


### NightRing

[App page](https://appshunter.io/ios/app/nightring/id6790335160)

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Plus Monthly | $1.49 | per month |
| Plus Yearly | $11.99 | per year |
| Coffee | $2.99 | one-time |
| Good Burger | $9.99 | one-time |
| Plus Lifetime | $24.99 | one-time |
| Dinner | $29.99 | one-time |


## Frequently asked questions

### Is Body Temperature Memo free?

Body Temperature Memo is free to download, with no in-app purchases.

### Is NightRing free?

NightRing is free to download, with in-app purchases available.

### Do Body Temperature Memo or NightRing have ads?

Both Body Temperature Memo and NightRing show ads.

### Which is updated more often, Body Temperature Memo or NightRing?

Body Temperature Memo ships an update every 3 months, and NightRing every 6 weeks. Most recently, Body Temperature Memo was updated on October 29, 2026 and NightRing on November 1, 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.*