Personal approach
You work directly with the developers, not with account managers.
A custom iOS app from idea to App Store
We designed and built ShotDiary, a complete shooting diary in your pocket. Training session logs, firearm and ammunition tracking, and smart reminders. 100% offline, no accounts.
App Store
4.5 out of 5
4.5 out of 5
Data on your phone
100% offline
100% offline
Brief and solution
An app for people who take shooting seriously
Sport shooters need to keep track of training sessions, ammunition usage, firearm maintenance, and document validity. Most do it in their head, on paper, or in Excel.
Before the app
Paper and Excel
Records scattered across notebooks, notes, and spreadsheets. Nothing tracks maintenance or document expiry.
✕ Starting point
What shooters were dealing with
- —Training session records scattered across paper and Excel.
- —No overview of ammunition usage per individual firearm.
- —Firearm service and document expiry are easy to forget.
- —Nobody wants to put sensitive firearm data into someone else's cloud.
✓ Our solution
What the app delivers
- ✓A training diary with a calendar, target photos, and notes.
- ✓Firearm and ammunition tracking with automatic round deduction.
- ✓Smart reminders for maintenance and upcoming expiry dates.
- ✓100% offline, your data stays only on your phone.
Our approach
From idea to App Store
01
Concept
Features a shooter will genuinely use.
02
UX and UI design
Simple controls, even at the range.
03
Development
React Native and Expo for iOS.
04
Offline data
Everything stored locally on the phone.
05
App Store
Preparation, review, and release.
06
Updates
Premium features and improvements.
What the app does
The whole training cycle in your pocket
From logging a training session to tracking gear and watching deadlines.
Training diary
Log a training session in seconds
Date, range, firearm, and ammunition. Plus round counts, malfunctions such as a stoppage or misfire, a note, and a target photo. The calendar shows when and how much you have shot.
Gear
Firearms and ammunition
Tracking of your firearms and ammunition types. After every training session, rounds are automatically deducted from your stock.
Watching your back
Smart reminders
Firearm service after a set number of rounds and upcoming medical fitness expiry. You will never miss a deadline.
Privacy
100% offline and private
No accounts, no cloud. Sensitive firearm data stays only on your phone.
Offline
No accounts
No cloud
Sharing
Local context
Built for Czech shooters
Firearm licence categories, medical fitness, and Czech terminology. The app speaks the shooter's language.
Take a look inside
The app at a glance
Result
A finished app on the App Store
Released in 2026, available for free with optional Premium.
4.5★
user rating on the App Store
100%
offline, no accounts or cloud
iOS
native experience on iPhone
0 Kč
free, Premium as a one-off for 49 Kč
“
We wanted a diary we would take to the range ourselves. Fast, offline, and with no compromises on privacy.
ShotDiaryA DevBoys in-house product
Tech stack
What the app is built on
React Native
Expo
iOS
Offline-first
App Store
Have an idea?
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Want your own app or website?
Get in touch and we will guide you from idea to release. You can start with the Start package.