Choose your workout tracker
Strong is built around a gym log that stays out of your way. Lightweight also keeps your sets and previous results close, with additional ways to bring a plan into your iPhone workout routine.
Explore Lightweight
Strong may suit you if you rely on its existing iPhone, Android or Apple Watch workflow, its training templates, or the progress tools you already use. A tracker that works well for your routine does not need changing just because another app exists.
Consider Lightweight if you want to keep your Strong history while organizing workouts in folders, importing a plan from text or an image, or sharing training with friends. Review the import and one familiar workout before deciding.
| Your task | Strong | Lightweight |
|---|---|---|
| Keep a gym log | Strong describes workout tracking, supersets, notes, RPE, custom timers and progress charts. | Log weights, sets and reps with previous performance visible, mark warm-ups and supersets, and use automatic rest timers. |
| Plan your training | Strong describes workout templates, custom exercises and workout scheduling. | Organize routines into folders, choose exercises and training days, edit a starting plan, or bring an existing program. |
| Bring a written plan | Use Strong's current product and help pages to check how its template workflow fits your source plan. | Import a routine from a screenshot, photo, text or voice description, then review the detected exercises and targets. |
| Move recorded sessions | Strong's help center documents CSV export from Settings on iPhone. | Import Strong CSV history and plans without reformatting. Check dates, units, exercise matches and sets after transfer. |
| Review progress | Strong describes best sets, estimated one-rep max, advanced charts and body measurements, including Strong PRO tools. | Review recorded sessions, exercise progress and personal records. Advanced statistics and muscle distribution are paid features. |
| Choose your device | Strong advertises iPhone, Android and Apple Watch support. | Lightweight supports iPhone and Apple Watch, including complete workout recording without your iPhone nearby. |
Published by Lightweight. Strong descriptions are based on its official sources, not a performance test. Features and subscription terms can change.
Your old sets matter because they help you choose today's load and repetitions. When comparing Strong and Lightweight, use the same exercise, weight convention and training day. Check how easily you can see the previous performance and record the new result.
A routine template is the plan; a completed session is the actual performance. Compare both when moving between trackers. Keeping a plan does not by itself confirm that all the historical dates and sets have transferred.
Strong's official help center instructs iPhone users to open the in-app Settings and select Export Strong Data. Save the original CSV before importing it into another app. Menu wording may change between app versions; the official export instructions are linked below.
Lightweight supports Strong CSV without reformatting and transfers history and plans. Review imported sessions and routines before continuing. Keep an export even after a successful move: Strong's export documentation says exported files cannot be imported back into Strong.
Check a recent Strong session against its imported version: date, exercise variation, weight unit, working sets and repetitions. Do the same for an older session, and check the training days in your saved plan.
Then log one normal workout in Lightweight. Use the Previous column as a reference, record your actual sets, and compare the next session using the same convention. You decide the working weight; the tracker records and presents the result.
Strong's website lists Apple Watch support, advanced charts and other tools. Lightweight also supports complete workout recording on Apple Watch without an iPhone nearby, along with plan import, routine folders, gym logging and sharing workouts with friends. This comparison does not claim that either app lacks a feature simply because it is not discussed here.
Lightweight's free version has import limits; paid import has no limits. Exact quotas and regional prices are not compared. Check the current app listings and subscription terms if price or a particular paid tool determines your choice.
Competitor product information checked October 5, 2026. Lightweight CSV compatibility is confirmed by the product owner.