Comparison

Sistens vs I'm Doing It

Price, ratings, monetisation and update history for both apps, side by side โ€” with what reviewers say about each.

Head to head
About

Sistens

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Sistens enables users to submit two pictures which we then use to create your BioStructural Analysis report. The purpose of the analysis is to look for structural deviations of the body so we can recommend corrective techniques & exercises.ย  BioStructural deviations have been shown to lead to degenerative disc disease (DDD) and/or osteoarthritis (OA) of the spine. Correcting these deviations helps prevent DDD & OA from occurring and improves overall health, performance, spinal hygiene, and well-being.

About

I'm Doing It

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Forming or keeping up with new healthy habits is extremely hard, but the solution is very easy. For the first couple of days you feel motivated and it is easy but each day it gets harder and the 21 days people used to tell you you need to form a habit feels unreachable. 21 days is way too lofty of a goal, luckily theres a better way. "I'm Doing It" helps you actually form new habits. It does this by keeping it simple, you make 3 goals a day, but you don't have to achieve them all. Nobody is perfect it does not make sense to feel shame if you don't accomplish all of your goals every day. With I'm Doing It your goal is only to complete 2 of the goals a day. This is the secret to forming habits.

Screenshots

Sistens2 screens
I'm Doing It4 screens

Verdict

The call

The clearest difference is ads: I'm Doing It at none against Sistens's shown. I'm Doing It also leads on update cadence (every 5 weeks vs every 28 months) and iOS requirement (12.0 vs 15.6). On price, in-app purchases and device support there is nothing between them.

Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Sistens ships an update every 28 months, I'm Doing It every 5 weeks. The most recent releases landed on October 13, 2026 and October 6, 2026 respectively.

Scorecard3 real differences ยท 3 level
Sistens versus I'm Doing It: the parameters behind the verdict, then further details
ParameterSistensI'm Doing It
PriceFreeFree
Update frequencyEvery 28 monthsEvery 5 weeks โ€” better
AdsYesNo โ€” better
In-app purchasesNoNo
DevicesiPhone, iPodiPhone, iPod
Requires iOS15.612.0 โ€” better
Further details โ€” not scored
Size43 MB24 MB
Age rating12+4+
DeveloperKenneTech LLCMaurice Landers III

In-app purchases

None

Sistens

No in-app purchases

None

I'm Doing It

No in-app purchases

Questions

Is Sistens free?
Sistens is free to download, with no in-app purchases.
Is I'm Doing It free?
I'm Doing It is free to download, with no in-app purchases.
Do Sistens or I'm Doing It have ads?
Sistens shows ads; I'm Doing It does not.
Which is updated more often, Sistens or I'm Doing It?
Sistens ships an update every 28 months, and I'm Doing It every 5 weeks. Most recently, Sistens was updated on October 13, 2026 and I'm Doing It on October 6, 2026.

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