# BPHistory vs ChemZero

The clearest difference is rating: BPHistory at 5.0 against ChemZero's 4.4. BPHistory also leads on in-app purchases (none vs 7). ChemZero's advantage is update cadence (every 9 days vs every 11 months) and ratings volume (93 vs 1). On price, ads and device support there is nothing between them.

Both are free to download. ChemZero sells 7 in-app purchases, starting at $7.99 per 7 days. BPHistory asks for nothing beyond the download.

BPHistory holds the better App Store score, 5.0 against 4.4. That said, the two scores are not equally well evidenced: ChemZero has 93 ratings behind it against 1, so its average is the more settled of the two.

BPHistory ships an update every 11 months, ChemZero every 9 days. The most recent releases landed on October 18, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | BPHistory | ChemZero |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/bphistory/id6738591485/reviews)** | [4.4 (93 ratings)](https://appshunter.io/ios/app/chemzero-ingredient-checker/id6739990764/reviews) |
| Number of ratings | 1 | **93** |
| Positive reviews | — | 61.1% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 11 months | **Every 9 days** |
| Monetization | **Free** | Subscription |
| Size | 3 MB | 55 MB |
| Requires iOS | 26.5 | **16.6** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Tom Vollmer](https://appshunter.io/developer/1216343477) | [Clean Product Scanner LLC](https://appshunter.io/developer/1787834562) |

## What reviewers say

### BPHistory

[App page](https://appshunter.io/ios/app/bphistory/id6738591485)

Easily record and visualize your blood pressure and heart rate readings. Track your history with scrollable lists and line charts, and share your data via PDF. Your health information is securely stored only on your device.

**Highlights:** Record blood pressure and heart rate readings, View history as a scrollable list, Visualize readings with a line chart, Share readings via PDF, Local data storage for privacy, No account or web login required

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

**In-app purchases:** none


### ChemZero

[App page](https://appshunter.io/ios/app/chemzero-ingredient-checker/id6739990764)

This app helps you identify and avoid harmful ingredients in everyday products. It uses AI to scan barcodes or photos, providing a Longevity Score and suggesting healthier alternatives for food, cosmetics, and household items.

**Highlights:** PFAS & Microplastic Detection, Seed Oil & Processed Food Scanner, Longevity Index scoring, AI Ingredient Checker, Healthy Alternatives recommendations, Barcode & Photo Scan, Safety Alerts

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

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ChemZero: Weekly Access | $7.99 | per 7 days |
| ChemZero: Weekly Access | $7.99 | per 7 days |
| ChemZero: Weekly Access | $9.99 | per 7 days |
| ChemZero Yearly 50 | $19.99 | per year |
| ChemZero Yearly Access | $39.99 | per year |
| ChemZero: Yearly Access | $39.99 | per year |
| Lifetime Access | $79.99 | one-time |


## Frequently asked questions

### Is BPHistory free?

BPHistory is free to download, with no in-app purchases.

### Is ChemZero free?

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

### Which has better reviews, BPHistory or ChemZero?

BPHistory is rated higher. BPHistory averages 5.0 out of 5 from 1 ratings, while ChemZero averages 4.4 from 93 ratings.

### Do BPHistory or ChemZero have ads?

Neither BPHistory nor ChemZero shows ads.

### Which is updated more often, BPHistory or ChemZero?

BPHistory ships an update every 11 months, and ChemZero every 9 days. Most recently, BPHistory was updated on October 18, 2026 and ChemZero 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.*