# Stratigraphy Sequence Tutor

> Stratigraphy Sequence Tutor (iPhone/iPad app by Joseph Kodet.)

- Source: https://appshunter.io/ios/app/stratigraphy-sequence-tutor/id1464358538 (this page in markdown: same URL + `.md`)
- Developer: [Joseph Kodet](https://appshunter.io/developer/1185360976)
- Category: Education, Reference
- Price: $1.99
- Age rating: 4+
- Requires: iOS 15.0 · 5 MB
- Languages: American English
- Released: 2019-05-20
- Data updated: 2026-05-19
- User reviews in markdown: https://appshunter.io/ios/app/stratigraphy-sequence-tutor/id1464358538/reviews.md

## What is Stratigraphy Sequence Tutor?

Stratigraphy Sequence Tutor is an app to help you memorize the sequence from most recent to earliest of the Ages, Epochs, Periods, Eras, Eons & SuperEons. Additionally, there is a quiz to help you memorize how many years ago in sequence for the Ages, Epochs, Periods & Eras in named order from most recent to earliest.

As you select each timescale your correct answer will appear in the PickerRoll. You may roll through your correct answers to help you review and memorize the correct sequence of timescales and when you are ready to select the next timescale in the sequence then the PickerRoll will roll back automatically to your most recently chosen answer in the sequence and add the next correct answer to the list.

This app is an excellent study aid for students of geology, paleontology, archaeology, history & climate sciences.


## Version history (last 5 releases)

### 1.0.5 — 2023-07-10

updated for latest iOS versions

### 1.0.4 — 2020-05-07

full screen restoration due to iOS changes

### 1.0.3 — 2019-09-25

internal improvements, name updates

### 1.0.1 — 2019-06-19

internal fixes, minor change to titling

### 1.0 — 2019-05-19

No release notes.

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## More apps by Joseph Kodet

- [Citric Acid Cycle Tutor](https://appshunter.io/ios/app/citric-acid-cycle-tutor/id1185360977)
- [Glycolysis Glucogenesis Tutor](https://appshunter.io/ios/app/glycolysis-glucogenesis-tutor/id1190613837)
- [Pentose Phosphate Paths Tutor](https://appshunter.io/ios/app/pentose-phosphate-paths-tutor/id1196449524)
- [Amino Acid Codons Tutor](https://appshunter.io/ios/app/amino-acid-codons-tutor/id1198324981)
- [Electron Transport Chain Tutor](https://appshunter.io/ios/app/electron-transport-chain-tutor/id1207414830)
- [Photosystems Tutor](https://appshunter.io/ios/app/photosystems-tutor/id1210779550)

All apps by Joseph Kodet: https://appshunter.io/developer/1185360976

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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 2026-05-19.*