Comparison

Body Temperature Memo vs NightRing

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

Head to head
About

Body Temperature Memo

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
Read full description

A simple body temperature recording app that can be used easily. You can smoothly record the result of temperature measurement with a thermometer. [Main functions] - Record body temperature in a few steps - Vertical calendar format makes it easy to see changes - Displays the average daily body temperature - With graph display - Up to 3 data can be switched and used, so you can record the temperature of your child and family. - Has text memo function! It is convenient for recording medical conditions such as headaches and sore throats and appointments for hospital visits. The average value, graph, and memo can be displayed or hidden separately. It can be used to record basal body temperature as it corresponds to the second decimal place. Precautions This app does not measure your body temperature like a thermometer. It is an application to record and manage the results of temperature check with a thermometer.

About

NightRing

Features
Read full description

"When did I fall asleep last night?" — NightDial answers the moment you open it. It reads the sleep data your Apple Watch or iPhone already saves to Health, and draws each night as an arc on a 24-hour dial. Zero input required. Just sleep like you always do. ■ Sleep Rings Sleep that crosses midnight stays whole on a circle. Bedtime to wake-up, one arc, one glance. ■ A calendar of rings One ring per day, a month at a time. Aligned arcs mean a steady rhythm — the messy nights stand out instantly. ■ Sleep Score Duration, rhythm, continuity, and timing — scored every morning, with the full breakdown visible. You'll know exactly what to fix. ■ Today's Note One piece of advice a day, picked for your recent sleep pattern from thousands of pre-written insights. ■ Night Vitals (Apple Watch) Heart rate, respiratory rate, blood oxygen and more, shown alongside each night. ■ Social Jet Lag See exactly how far your weekends drift from your weekdays — in minutes. Now you know why Mondays hurt. ■ Privacy Your sleep data is processed entirely on your device and never leaves it. ―――――――――― NightDial Plus (subscription) ―――――――――― The free version fully covers your last 14 days, plus today's score and advice. With Plus you get: - Your entire history, as far back as it goes - Trend charts: bedtime, wake time, score, nightly heart rate - Detailed weekday vs. weekend analysis - No ads Pricing: $0.99/month, $6.99/year (with 7-day free trial), or $16.99 lifetime. Subscriptions renew automatically unless cancelled at least 24 hours before the end of the period. Manage or cancel anytime in your App Store account settings. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://kakovail.info/privacy/ * Requires sleep data in Apple Health (from Apple Watch, or iPhone with a sleep schedule). * NightDial shows rhythm insights only and does not provide medical evaluation or advice.

Screenshots

Body Temperature Memo4 screens
NightRing4 screens

Verdict

The call

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.

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

UpkeepUpdate frequency

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.

Scorecard4 real differences · 6 level
Body Temperature Memo versus NightRing: the parameters behind the verdict, then further details
ParameterBody Temperature MemoNightRing
PriceFreeFree
Rating3.0 (1 ratings) — better—
Positive reviews66.7% of reviews—
Number of ratings1 — better—
Update frequencyEvery 3 monthsEvery 6 weeks — better
AdsYesYes
In-app purchasesNo — betterYes
MonetizationAd-supported—
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS13.0 — better17.0
Further details — not scored
Size42 MB6 MB
Age rating4+4+
DeveloperShigeo FukudaHiroyuki Kako

In-app purchases

None

Body Temperature Memo

No in-app purchases

6 purchases

NightRing

Subscriptions2
  • Plus Monthly$1.491 Month
  • Plus Yearly7 Days trial$11.991 Year
One-time4
  • Coffee$2.99
  • Good Burger$9.99
  • Plus Lifetime$24.99
Show 1 more
  • Dinner$29.99

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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