TradeZella is a cloud-based trading journal sold as a subscription. TradingDiary Pro is a Windows desktop trading journal that keeps your trades in a local file on your PC and is sold as a $149 one-time license. Choose TradingDiary Pro if you want local data, no mandatory subscription, option strategy grouping and tax reports; choose TradeZella if you want trade replay and backtesting in the same cloud tool and the monthly price fits your budget.
| TradingDiary Pro | TradeZella | |
|---|---|---|
| Pricing model | One-time license | Subscription |
| Price | $149 once (incl. 1 year of upgrades); optional $49/year for further upgrades | Essential $35/month ($26/month billed annually); Pro $59; Ultra $99 |
| Cost over 3 years (entry paid plan) | $149 (keep your version) or $247 with all upgrades | $945 (Essential, billed annually) |
| Free plan / trial | 30-day fully functional trial, no e-mail required | Not stated on the pricing page |
| Platform | Windows desktop; web version in beta (any OS) | Web app |
| Where your trades are stored | Local database file on your PC (web version: your own online account) | Vendor's cloud |
| Interactive Brokers import | Yes – Flex web service (one click) or Flex XML files | Yes – daily Flex auto-sync or CSV upload |
| Option strategy grouping | Yes – 25+ strategies, adjustments and rolls | Options charts and expiration report |
| MAE / MFE analysis | Yes | Yes |
| Country-specific tax reports | Yes – capital gains report + US, Germany, Canada, Australia | Not listed on the pricing page |
| AI assistant | Built-in local MCP server for Claude (read-only, your data stays on your PC) | Zella AI (credits per month), AI agents on Pro and Ultra |
| Trade replay | No | Pro and Ultra plans |
| Mobile app | No | Not stated on the pricing page |
TradeZella information is taken from the vendor's own website (pricing page) and was checked on October 12, 2026. Prices are in USD without VAT and may change – please check the vendor's site for current terms. “Not listed” means the feature is not mentioned on the vendor's pricing page, not that it is unavailable.
To be fair about the trade-offs:
TradingDiary Pro imports directly from your broker – for example the Interactive Brokers Flex import or one of the other 30+ import modules – so you can rebuild your history from the original broker statements instead of exporting it from another journal. Try it on your own data with the free 30-day trial before you cancel anything.
Over three years TradingDiary Pro costs $149 if you keep your version, or $247 with every upgrade. TradeZella's entry paid plan costs $945 (Essential, billed annually) over the same period, based on the prices listed on October 12, 2026.
TradingDiary Pro stores your trades in a local database file on your own PC and works offline. TradeZella is a cloud service: your trading history is stored on the vendor's servers.
No. TradingDiary Pro has no trade replay and no mobile app. It is a Windows desktop application; a browser-based web version is available in beta for macOS and Linux.
Yes. It downloads Interactive Brokers Flex statements with one click via the Flex web service, or imports saved Flex XML files, including cash transactions and net asset value history.
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