# Leps by Fieldguide — LepSnap

> Moth and butterfly identification, observation recording, and community for enthusiasts. (iPhone/iPad app by Change Theory Corp.)

- Source: https://appshunter.io/ios/app/leps-by-fieldguide/id1167114017 (this page in markdown: same URL + `.md`)
- Developer: [Change Theory Corp](https://appshunter.io/developer/879829386)
- Category: Education, Reference
- Price: Free
- Rating: 4.26/5 from 23 App Store ratings · 17 written reviews indexed
- Age rating: 4+
- Requires: iOS 9.0 · 62 MB
- Languages: English
- Released: 2017-07-01
- Data updated: 2026-07-04
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/leps-by-fieldguide/id1167114017/reviews.md

## What is Leps by Fieldguide?

Fieldguide.ai is to the pocket field guide, what Wikipedia is to the encyclopedia—a crowd-sourced compendium of all natural and cultural things.

"Leps" is Fieldguide's dedicated ID assistant and community for lep lovers (Lepidoptera: moths & butterflies). Use Leps to:

Identify species ~
Leps analyzes your moth/butterfly photos to suggest possible IDs that can be later verified by the Fieldguide community.

Record your observations ~
Leps arranges your observations into a dynamic checklist. When taxonomic treatments change, your records update automatically.

Showcase your collection ~
Sharing collection data builds a richer picture of Lepidoptera morphology, phenology, and distribution.

Connect with enthusiasts ~
Follow people who share your curiosity and interests.

You can also publish your lep photos on the web:
https://leps.fieldguide.ai

## Key features

- Photo-based species identification
- Automatic observation checklist updates
- Collection data sharing
- Connect with other enthusiasts
- Publish photos online

## Recent user reviews (10 of 17)

All indexed reviews: https://appshunter.io/ios/app/leps-by-fieldguide/id1167114017/reviews.md

### 1/5 — Does Nothing

*2022-06-02, version 1.4.11*

Can’t find what this app is supposed to do. I thought it was a way to identify moths and butterflies. It does not appear to do that. Could not figure out what it is meant to do.

### 4/5 — This app needs community!!!

*2022-03-03*

I love the features of this app, It took a few minutes to navigate but once I figured it out it was very easy to work. I think that there should be a way to message other users and create conversations about moths, it would be nice to talk about my passion with other people who share it! Other than the lack of community it’s a pretty good app, it could be a bit more polished but overall I would give it a 4/5. It’s the only app like it out there so it will do :))

### 5/5 — Fast, Accurate & Fun

*2021-07-22*

This app does exactly what it says and does it well, plus adding your photo to the field guide is fun, as is viewing the photos of others.

This is the real deal. I tried other apps that couldn’t correctly identify a clear photo of a Pearl Crescent Butterfly and still had the audacity to hound you to buy their premium version. Don’t waste your time with other apps; stick with Leps.

bit.ly/PearlCrescentButterfly

### 3/5 — Cannot sign up

*2021-07-08*

Installed it, but there seems to be no way to sign up? Just two empty boxes, username and password, if I enter what I want my info to be it says failed.  The keyboard seems to be hiding buttons below it but there is no way to make my keyboard disappear. They flash for a second when I restart and exit the app. There is a forgot password option, but I have never signed up yet, so that is useless to me.  Maybe it is a bug with the mini iPhones?  I was generous and gave 3 stars even though I could not access the app.

### 4/5 — Small problem

*2020-09-22*

I used this App for several months now and it did a great job thanks.

### 5/5 — Love it!

*2020-08-30*

Edit! I somehow missed the fairly obvious “iNaturalist” slider when submitting new images! I’m editing my observations now and they’re immediately showing up in iNaturalist. So, never mind!
I’ve loved this app for a few years and it is still my go-to for unknown moths, but it doesn’t seem to be syncing my observations to iNaturalist anymore? I’ve switched the sync “off” and back “on” and entered my iNaturalist login again, but there are still several moths in my LepSnap account that don’t show up on iNat. I searched online & on fieldguide.ai for help, but I actually couldn’t find any mention of iNaturalist. Is that function maybe being phased out? Thanks for the great app, regardless!

### 1/5 — User hostile.

*2020-08-06*

Was immediately met with a login prompt. There was no way to access the app without providing them information beforehand. Deleted the app.

### 5/5 — Excellent for moth ID

*2020-07-21*

Hands down the best app for moth ID.  Whatever the algorithm is, it’s amazing and is getting better through the years. Leps returns the correct ID probably 95% of the time with a decent photo, and if you’ve used any other plant or animal ID apps, you’ll know how impressive that is.  

I recommend this to new moth enthusiasts all the time, so much easier and more enjoyable for novices than thumbing through a field guide or using a taxonomic key.  Thanks!  Keep it going!

### 5/5 — Best Moth Identification App

*2020-06-24*

Okay so I NEVER review apps but this one deserves a great review. It is so easy to use, and the image ID system is extremely helpful. I can almost immediately identify moths and butterflies with a quick photo. As an aspiring entomologist, I’m having a great time using this app and learning more about the insects around me.

### 5/5 — Best Leps ID

*2020-04-29*

Just love it

## Frequently asked questions about Leps by Fieldguide

### How does Leps identify moths and butterflies?

Leps analyzes your uploaded photos of moths and butterflies to suggest possible species identifications. These suggestions can then be verified by the Fieldguide community, leveraging crowd-sourced knowledge.

### What kind of observations can I record with Leps?

You can record your observations of moths and butterflies, which are then organized into a dynamic checklist. This checklist automatically updates as taxonomic treatments change, ensuring your records remain current.

### Can I share my collection data with others using Leps?

Yes, Leps allows you to showcase your collection by sharing data. This contributes to a richer understanding of Lepidoptera morphology, phenology, and distribution within the community.

### Does Leps have ads?

No, Leps is ad-free. The application does not contain advertisements, providing an uninterrupted user experience for identifying and recording insect observations.

### What devices is Leps available on?

Leps is available on iPhones and iPods. It is designed for mobile use, allowing you to identify and record observations on the go.

### How often is Leps updated?

The latest version of Leps is 1.4.11, last updated on April 29, 2020. While the last update was in 2020, the app's core functionality remains robust for its intended purpose.

### What is the age rating for Leps?

Leps has an age rating of 4+. This indicates it is suitable for children and adults, making it accessible for a wide range of users interested in nature and entomology.

### Can I connect with other users on Leps?

Yes, Leps facilitates connection with other enthusiasts. You can follow individuals who share your curiosity and interests, fostering a community around moth and butterfly observation.

## Version history (last 5 releases)

### 1.4.11 — 2020-04-29

Various bug fixes and improvements

### 1.4.10 — 2019-10-17

Bug fixes and improvements

### 1.4.8 — 2019-09-26

Minor bug fixes and improvements

### 1.4.7 — 2019-05-30

Various bug fixes and improvements

### 1.4.6 — 2019-01-07

Bug fixes and improvements

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## More apps by Change Theory Corp

- [Fieldguide – for everything](https://appshunter.io/ios/app/fieldguide-for-everything/id879829383)

All apps by Change Theory Corp: https://appshunter.io/developer/879829386

## Related topics

[employee of the moth](https://appshunter.io/ios/topics/employee-of-the-moth)

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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 2026-07-04.*