Liftosaur in short
Fully scriptable progressions, with free Hevy CSV import and CSV and JSON export. The downside: apple Watch, graphs and the plate calculator need Premium, and there is no Strong import.
Alpha Progression in short
Pro generates plans and recommends progression. The downside: the most expensive of these apps, and the plan automation is Pro only.
Free tier and price
Liftosaur free tier: programs, editor, logging, history, import and export, measurements and sharing. Paid: premium: $4.99/mo, $39.99/yr or $99.99 lifetime (US App Store).
Alpha Progression free tier: unlimited logging, own plans, rest timer, records and CSV export. Paid: pro: about $12.99/mo or $79.99/yr on the US App Store (one listing showed $69.99/yr).
Prices are the US App Store listings as of the check date, and some listings show several entries without labelling the billing period, so confirm in the store before paying.
Switching between Liftosaur and Alpha Progression
Moving your data. Liftosaur: Imports Hevy CSV; exports CSV and JSON. Alpha Progression: CSV export is free; import not verified.
Watch support. Liftosaur: Apple Watch (Premium only); Wear OS not found. Alpha Progression: Not verified.
Ads. Liftosaur: Not verified. Alpha Progression: Not verified.
If a game is what you are missing
Neither app has a game layer. We make GYM RPG, which logs the same sets, reps and weight and adds XP, a skill tree and a party boss. It is not a drop-in for either app, because we have no import tool and you would start fresh.