# i vs Tooth Sleuth

The clearest difference is price: Tooth Sleuth at Free against i's $9.99. Tooth Sleuth also leads on update cadence (every 3 weeks vs every 21 months). i's advantage is in-app purchases (none vs 1) and iOS requirement (11.0 vs 18.0). On rating, review sentiment, ratings volume and ads there is nothing between them.

Tooth Sleuth is free to download; i costs $9.99 up front. Tooth Sleuth sells 1 one-off in-app purchase. i asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for i against 4.9 for Tooth Sleuth. Both are backed by a comparable volume of ratings — 22 and 24 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

i ships an update every 21 months, Tooth Sleuth every 3 weeks. Both last shipped on October 25, 2026.

## The numbers

| Metric | i | Tooth Sleuth |
| --- | --- | --- |
| Price | $9.99 | **Free** |
| Rating | **[5.0 (22 ratings)](https://appshunter.io/ios/app/i-dentify-dental-anatomy/id1488901752/reviews)** | [4.9 (24 ratings)](https://appshunter.io/ios/app/tooth-sleuth/id6748571321/reviews) |
| Number of ratings | 22 | **24** |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 21 months | **Every 3 weeks** |
| Monetization | Paid | **Free** |
| Size | 132 MB | 13 MB |
| Requires iOS | **11.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Nathan Eshoiee](https://appshunter.io/developer/1470363382) | [Andrew Margarit](https://appshunter.io/developer/1826362583) |

## What reviewers say

### i

[App page](https://appshunter.io/ios/app/i-dentify-dental-anatomy/id1488901752)

This 3D application helps dental and hygiene students learn tooth morphology. It provides concise information on key tooth structures and identification features, with a custom quiz maker and timer to prepare for exams.

**Highlights:** 3D tooth morphology learning, Identify right vs. left teeth, Key structure identification, Custom quiz maker, Optional timer for quizzes, Concise identification information

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

**In-app purchases:** none


### Tooth Sleuth

[App page](https://appshunter.io/ios/app/tooth-sleuth/id6748571321)

Master dental identification with this interactive game designed by dental educators. Practice tooth numbering systems and anatomical names through engaging gameplay modes. Ideal for dental students preparing for exams and clinical practice.

**Highlights:** Interactive tooth identification, Clinician Mode (12:00 rotation), Multiple game modes (Timed, Survival, Practice), Adult and primary dentition, Universal, Palmer, FDI numbering systems, Leaderboard for schools

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Features | $3.99 | one-time |


## Frequently asked questions

### Is i free?

i costs $9.99, with no in-app purchases.

### Is Tooth Sleuth free?

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

### Which has better reviews, i or Tooth Sleuth?

i is rated higher. i averages 5.0 out of 5 from 22 ratings, while Tooth Sleuth averages 4.9 from 24 ratings.

### Do i or Tooth Sleuth have ads?

Neither i nor Tooth Sleuth shows ads.

### Which is updated more often, i or Tooth Sleuth?

i ships an update every 21 months, and Tooth Sleuth every 3 weeks. Most recently, i was updated on October 25, 2026 and Tooth Sleuth on October 25, 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.*