Comparison

FrogGrabber vs Nagi

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

Head to head
About

FrogGrabber

Test your reflexes and color recognition skills by tapping only the frogs of the specified color. Avoid visual tricks and compete with friends on online leaderboards for the fastest time. This game enhances attention, judgment, and concentration.

Highlights
  • Color-specific frog tapping
  • Visual trick avoidance
  • Attention and concentration training
  • Online leaderboards
  • Fast-paced gameplay
Features
Read full description

Tap only the frog of the specified color and compete for the fastest time. Be careful not to be tricked by mismatched cues, such as the word “green” written in red. This game trains your attention, judgment, and concentration all at once. With online rankings, you can compete with your friends!

About

Nagi

This app records nighttime sounds like talking and snoring, providing insights into loud moments and their duration. It allows users to tag sounds and correlate them with lifestyle factors, offering a personalized view of sleep patterns. Integrates with Apple Health for sleep data.

Highlights
  • Nighttime sound recording
  • Snoring and talking detection
  • Loud moment analysis
  • Sound tagging and correlation
  • Apple Health integration
  • Personalized sleep pattern tracking
Features
Read full description

Nagi records your own night, exactly as it happened. While you sleep, your phone's microphone quietly listens. In the morning you can hear how long you were loud, when it peaked, and your three loudest moments, in your own ears. No setup beyond one tap before bed, and if you like, Nagi can remind you at your usual bedtime. The sound is sent nowhere. Only the loud stretches are kept. The recording keeps more than snoring. Grinding your teeth, talking in your sleep: anything loud enough is kept the same way. On the free plan, Nagi does not judge what a sound was, and it does not tell snoring from grinding either. It is you, listening back, who decides what a sound was. Mark a moment "probably someone else" or "another sound" and it drops out of the numbers; the recording itself stays. On the paid plan, once your night is recorded, Nagi listens back to the loud parts right on your phone, and the morning shows one more card: of your loud minutes, how many were snoring and how many were something else. Nothing is sent anywhere. Nagi is not only for the person snoring. It is also for the person lying awake next to them. Instead of an argument, there is a record: what actually happened, not just what it felt like at 3am. Nagi asks about you before it shows you a number. Every morning starts with one simple question: how do you feel. If your own sense of the night disagrees with what Nagi recorded, you are right, and the screen says so. There are no targets, no streaks, and a rough night never costs more taps to record than a good one. As your nights add up, your own usual comes into view: not a population average, just your own line. Tag what happened or what you tried (alcohol, a nasal strip, medicine) with one tap, and once your record can carry it, Nagi lays your tagged nights beside the rest in minutes from your own record. The only evidence is your own nights. If you already wear a watch or a ring to sleep, Nagi can stand that night's sleep beside your sound. Nagi does not measure sleep with the phone. It reads the record your own device already wrote to Apple Health. In the morning there is one score out of 100, never against other people and never a goal. Under it stand the three parts it is made of, each with its arithmetic printed: how long you slept, measured against the night you ask for, 8 hours unless you change it under Health in Settings; how close to your usual bedtime, the middle of your own last 13 nights; and waking in the night. Deep, light and REM are drawn in the night's picture and score zero, because we measure them but cannot yet stand behind scoring them, and the screen says exactly that. The total needs 13 of your own nights before it exists; until then the parts show at full value and the app tells you how many nights are left. No watch and no ring means no score, and nothing else changes. The reading and the score are free. Your recordings, playback and your entire history stay free, forever. A paid plan (¥380 a month or ¥3,800 a year, 7 days free, renews until cancelled) exists only for the deeper analysis, never for your own record. Nagi is not a medical device and does not diagnose, treat, cure, or prevent any medical condition. Nagi counts; it never claims to find a condition. If snoring, breathing or sleep symptoms concern you, please see a doctor or another medical professional. Typhoon pressure, dry winter air, cedar pollen from February: the season changes, Nagi keeps listening either way. Privacy Policy: https://mynagi.jp/privacy Terms of Use: https://mynagi.jp/terms

Screenshots

FrogGrabber2 screens
Nagi4 screens

Verdict

The call

The clearest difference is rating: Nagi at 5.0 against FrogGrabber's 4.0. Nagi also leads on update cadence (weekly vs every 4 months). FrogGrabber's advantage is in-app purchases (none vs 2). On price, ratings volume, ads 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. Nagi sells 2 in-app purchases, starting at $7.99 per month. FrogGrabber asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Nagi holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

UpkeepUpdate frequency

FrogGrabber ships an update every 4 months, Nagi weekly. The most recent releases landed on November 3, 2026 and November 6, 2026 respectively.

Scorecard4 real differences · 6 level
FrogGrabber versus Nagi: the parameters behind the verdict, then further details
ParameterFrogGrabberNagi
PriceFreeFree
Rating4.0 (1 ratings)5.0 (1 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings11
Update frequencyEvery 4 monthsWeekly — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFreemium
DevicesiPhone, iPadiPhone, iPad
Requires iOS18.618.4 — better
Further details — not scored
Size3 MB81 MB
Age rating4+4+
Developermakoto amijimaTruths Lab

Customer experience

FrogGrabber

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

Nagi

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

FrogGrabber

No in-app purchases

2 purchases

Nagi

Subscriptions2
  • Monthly Plan7 Days trial$7.991 Month
  • Annual Plan7 Days trial$59.991 Year

Questions

Is FrogGrabber free?
FrogGrabber is free to download, with no in-app purchases.
Is Nagi free?
Nagi is free to download, with in-app purchases available.
Which has better reviews, FrogGrabber or Nagi?
Nagi is rated higher. FrogGrabber averages 4.0 out of 5 from 1 ratings, while Nagi averages 5.0 from 1 ratings.
Do FrogGrabber or Nagi have ads?
Neither FrogGrabber nor Nagi shows ads.
Which is updated more often, FrogGrabber or Nagi?
FrogGrabber ships an update every 4 months, and Nagi weekly. Most recently, FrogGrabber was updated on November 3, 2026 and Nagi on November 6, 2026.

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