# PepRop — Peptide Analyser

> Peptide Analyser (iPhone/iPad app by Yoshikazu Mikawa.)

- Source: https://appshunter.io/ios/app/peprop/id6745401971 (this page in markdown: same URL + `.md`)
- Developer: [Yoshikazu Mikawa](https://appshunter.io/developer/1778069380)
- Category: Education
- Price: Free with in-app purchases (on sale, was $3.99)
- Age rating: 4+
- Requires: iOS 18.2 · 4 MB
- Languages: American English
- Released: 2025-05-02
- Data updated: 2026-05-16
- User reviews in markdown: https://appshunter.io/ios/app/peprop/id6745401971/reviews.md

## What is PepRop?

PepRop is an app that allows you to analyse the key biochemical properties of peptide sequences. Users can enter a peptide sequence using the 2D amino acid property table to calculate molecular weight, hydrophobicity, isoelectric point, net charge, and other relevant physicochemical parameters. The app also provides detailed parameter definitions and calculations. In addition, PepRop supports antimicrobial peptide (AMP) profiling, helping to evaluate peptide function and activity. Users can submit peptide queries to NCBI BLASTP for further analysis and send sequences to AlphaFold for 3D structure prediction using the dedicated buttons.

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Peptide Analyser | $3.99 | one-time |



## Version history (last 5 releases)

### 2.8.14 — 2026-02-12

Enter peptide sequences using the pop-up 2D AA table, view each amino acid as its full name, and tap to see its chemical properties at a glance while entering the sequence. We’ve added a dedicated button to save your AMP Spectrum results for easy access later.

### 2.7.14 — 2026-01-26

You can now explore the AMP feature and 3D structure prediction freely, and will only be prompted to upgrade when you choose to proceed with peptide sequence analysis.

### 2.7.13 — 2026-01-13

Added support for in-app purchases.

### 2.6.13 — 2025-11-28

Added a clearer warning message when the anti-microbial spectrum cannot be retrieved.

### 2.6.12 — 2025-11-22

Added a function to assess the likelihood of antimicrobial activity spectrum for a user-provided peptide.

## More apps by Yoshikazu Mikawa

- [BioCaL](https://appshunter.io/ios/app/biocal/id6476985449)
- [MoLSoL](https://appshunter.io/ios/app/molsol/id6478563548)
- [CodonQ](https://appshunter.io/ios/app/codonq/id6479198761)
- [AirLify](https://appshunter.io/ios/app/airlify/id6479359307)
- [StoPify](https://appshunter.io/ios/app/stopify/id6480067024)
- [W8Bus](https://appshunter.io/ios/app/w8bus/id6502446764)

All apps by Yoshikazu Mikawa: https://appshunter.io/developer/1778069380

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-05-16.*