# Leeman Software

> Leeman Software is the product studio of Leeman Group LLC, run by one developer who designs, builds and runs its own web and Android apps end to end, servers included: OSRS Exchange, live Grand Exchange prices trusted by 364,000+ Old School RuneScape traders, RS3 Exchange, the same platform for RuneScape 3, and Wallyt, an Android app for splitting shared costs. It also takes on a few client projects a year.

Contact: hello@leemansoftware.com

## Products

- [OSRS Exchange](https://leemansoftware.com/osrs-exchange/): Live Grand Exchange prices for Old School RuneScape, trusted by 364,000+ traders. Margins after tax for every item, price alerts on Discord and email, and Premium billed through Stripe. Platform: Web. The product itself: https://www.osrs.exchange
- [RS3 Exchange](https://leemansoftware.com/rs3-exchange/): Live Grand Exchange prices for RuneScape 3, on the same platform as OSRS Exchange, with five years of daily history behind every item and no ads. Platform: Web. The product itself: https://www.rs3.exchange
- [Wallyt](https://leemansoftware.com/wallyt/): Split rent, trips and dinners with the people you share them with. Everyone sees the same balances as they change, in any of 161 currencies, and settles up in as few payments as possible. Platform: Android, coming soon.

## Scale

- 364,000+ traders on OSRS Exchange
- 3 products, one developer
- 2,900+ commits since 2022
- 4,500+ automated tests

## Integrations

- Stripe: Premium subscriptions for both Exchange sites: checkout, automatic sales tax, renewals and a portal to change or cancel.
- Google: Sign-in on the web and on Android, through One Tap and Android’s own account sheet.
- Discord: Accounts linked through Discord, price alerts sent by direct message, and Premium roles kept in step with each subscription.
- RuneScape Wiki: Real-time Grand Exchange prices for both games, picked up the moment the Wiki refreshes them.
- WeirdGloop: Years of official daily Grand Exchange history, backfilled for every item in both games.
- Amazon SES and Postmark: Account email, price alerts and newsletters, with bounces and unsubscribes respected automatically.
- Cloudflare: In front of every site, with Turnstile keeping bots out of sign-up.
- Frankfurter: Central-bank exchange rates for Wallyt’s 161 currencies, with a fallback source and every rate kept.
- Sentry: Errors from browsers and servers reported as they happen, with what’s needed to fix them.

## Wallyt

- [Support](https://leemansoftware.com/wallyt/support/): answers to common questions and how to reach us
- [Privacy policy](https://leemansoftware.com/wallyt/privacy/)
- [Terms of use](https://leemansoftware.com/wallyt/terms/)
- [Delete your account](https://leemansoftware.com/wallyt/delete-account/)

## Optional

- [Website privacy](https://leemansoftware.com/privacy/): this website sets no cookies and runs no analytics