# Lingo by Abbott vs KnowKnow AI

The clearest difference is review sentiment: KnowKnow AI at 100% against Lingo by Abbott's 44%. KnowKnow AI also leads on update cadence (every 3 weeks vs every 2 months). Lingo by Abbott's advantage is rating (4.5 vs 3.0) and in-app purchases (none vs 4). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. KnowKnow AI sells 4 in-app purchases, starting at $9.99 per month. Lingo by Abbott asks for nothing beyond the download.

Lingo by Abbott holds the better App Store score, 4.5 against 3.0. That said, the two scores are not equally well evidenced: Lingo by Abbott has 7.9K ratings behind it against 2, so its average is the more settled of the two. Written reviews complicate that: 44% of Lingo by Abbott's written reviews are positive against 100% of KnowKnow AI's, so the app with the better star average is not the one people write more warmly about.

Lingo by Abbott ships an update every 2 months, KnowKnow AI every 3 weeks. The most recent releases landed on October 20, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | Lingo by Abbott | KnowKnow AI |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (7.9K ratings)](https://appshunter.io/ios/app/lingo-by-abbott/id1670445335/reviews)** | [3.0 (2 ratings)](https://appshunter.io/ios/app/knowknow-ai/id6748773796/reviews) |
| Number of ratings | **7.9K** | 2 |
| Positive reviews | 44.2% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Monetization | **Free** | Freemium |
| Best chart rank | **#174** | — |
| Size | 194 MB | 104 MB |
| Requires iOS | **15.1** | 16.4 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 17+ | 4+ |
| Developer | [Abbott](https://appshunter.io/developer/402314324) | [RETOWER TECH PTE. LTD.](https://appshunter.io/developer/1827325376) |

## What reviewers say

### Lingo by Abbott

[App page](https://appshunter.io/ios/app/lingo-by-abbott/id1670445335)

**Currently charting:** #174 Top Free · Health & Fitness (US App Store)

This system tracks your glucose 24/7 to provide real-time insights into your body's response to food and activities. It helps you understand your metabolism, learn new eating patterns, and track progress towards healthier habits.

**Highlights:** 24/7 glucose tracking, Personalized nutrition insights, Metabolism understanding, Habit change support, Glucose graph visualization, Lingo Count daily metric, Food & activity logging

**In-app purchases:** none

**What reviewers like**

- 🚀 Real-time glucose tracking
- 📊 Helpful data insights
- 🌟 Easy setup and use
- 🔍 Valuable for metabolic health
- 💪 Motivates lifestyle changes

**What reviewers complain about**

- 🐛 Frequent app crashes and freezes
- 🔋 High battery consumption
- 🔍 Limited data export and integration
- 🤔 Confusing 'Lingo Count' metric
- ⏱️ Delayed glucose readings

**Reported bugs**

- Sensor connectivity issues
- Inaccurate glucose readings
- Data sync problems and data loss
- Inconsistent app performance after updates

**Requested features**

- Apple Health integration
- Apple Watch app and complications
- More detailed data analysis and visualization
- Customizable glucose level alerts
- Improved food logging and tracking


### KnowKnow AI

[App page](https://appshunter.io/ios/app/knowknow-ai/id6748773796)

Effortlessly track your nutrition by simply snapping a photo of your food. This AI-powered tool provides instant analysis of calorie and macronutrient content, helping you understand your dietary intake.

**Highlights:** AI-powered food analysis, Instant calorie and macro breakdown, Photo-based tracking, Nutrition insights

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| KnowKnow Plus | $9.99 | per month |
| KnowKnow Pro | $14.99 | per month |
| KnowKnow Plus Yearly | $113.99 | per year |
| KnowKnow Pro Yearly | $178.99 | per year |


## Frequently asked questions

### Is Lingo by Abbott free?

Lingo by Abbott is free to download, with no in-app purchases.

### Is KnowKnow AI free?

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

### Which has better reviews, Lingo by Abbott or KnowKnow AI?

Lingo by Abbott is rated higher. Lingo by Abbott averages 4.5 out of 5 from 7.9K ratings, while KnowKnow AI averages 3.0 from 2 ratings.

### Do Lingo by Abbott or KnowKnow AI have ads?

Neither Lingo by Abbott nor KnowKnow AI shows ads.

### Which is updated more often, Lingo by Abbott or KnowKnow AI?

Lingo by Abbott ships an update every 2 months, and KnowKnow AI every 3 weeks. Most recently, Lingo by Abbott was updated on October 20, 2026 and KnowKnow AI on October 3, 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.*