Comparison

INER Cycle vs Antek

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

Head to head
About

INER Cycle

Features
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Download and try the INER Cycle application! The app gives you a possibility to note biological signs of the fertility during daily observations of a basal body temperature and a cervical mucus. Now you can do this in a convenient way! You can consult your observations with experienced teacher who will show you how to determine the fertility and infertility days in your cycle. What is important – all data are confidential and will not be shared with any other organization.  INER Cycle is the authorized tool of the Institute of Natural conception regulation Dr. med. Josef Rötzer – INER International and INER Poland - that teach the first all over the world modern and natural fertility awareness method developed by prof. Josef Rötzer. You are very welcome to participate in the course of this method with INER’ teacher (www.iner.org, www.iner.pl) or read the book: „Natural Conception Regulation” of prof. Josef Rötzer. Noting the body temperature measurements and cervical mucus observations and interpreting these signs you can indicate fertility and infertility days with great precision. INER Cycle is consistent with the nature, ecological, without limitations to creation and access to the cycle cards.  Try INER Cycle for free during 90 days!   The app may be helpful to: - monitoring woman’s fertility and health condition - reliably determine the best time to a child conception - increase a chance to conception (also for couples with a weaken fertility) - avoid pregnancy, even with 100% reliability - interpret cycle card whith a certified INER’ teacher App functions:

- storing the data in a cloud storage – the possibility to sign in different equipment with automatic synchronization, working offline (until the account in the system is active) - possibility to share the cycle card to interpretation for someone (for example husband) – free observator account - possibility to interpret the observations according to prof. Rötzer standardized card and signs - internet courses organizing possibility - printing cards - consulting cycle cards with INER’ teacher - many signs observations, your own notes - advanced chart showing temperature and fertility signs - context support - statistics - password protection - possibility to download the chart with interpretation in PDF version - languages: English, German, Polish   You can choose Observer or User account: Observer (for example husband) – may look through and interpret cycle cards that he has shared. The Observer account is for free.  User – has the possibility to insert and interpret observations. The user account is for free during first 90 days. After free trial period, the using of the system is payable 29,99 PLN for 1 year. The subscription payment is dedicated for INER Cycle maintenance and development. Before starting to use the app it is recommended to:  - read the instruction for prof.  Rötzer method http://iner.pl/metoda-rotzera/  - read the books about prof. Rötzer method (you can buy them in INER online shop) https://sklep.iner.pl/   - take part in the sympto-thermal method of prof. Rötzer course http://iner.pl/kursy/

About

Antek

Read full description

Antek is an application dedicated to parents. It allows you to monitor your child's development and health by comparing the child's measurement data with medically recognized standards. The application was created with experts from the Anthropology Department of the Children's Memorial Health Institute. - We use OLA/OLAF standards developed by the Children's Memorial Health Institute for Polish Children and WHO standards. - We support standards for premature babies. - We help interpret results.

Screenshots

INER Cycle3 screens
Antek4 screens

Verdict

The call

The clearest difference is in-app purchases: Antek at none against INER Cycle's 2. Antek also leads on update cadence (every 6 weeks vs every 3 months). INER Cycle's advantage is ads (none vs shown) and iOS requirement (11.0 vs 13.0). On price and device support there is nothing between them.

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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. INER Cycle sells 2 one-off in-app purchases. Antek asks for nothing beyond the download.

UpkeepUpdate frequency

INER Cycle ships an update every 3 months, Antek every 6 weeks. The most recent releases landed on January 11, 2026 and September 20, 2026 respectively.

Scorecard4 real differences · 2 level
INER Cycle versus Antek: the parameters behind the verdict, then further details
ParameterINER CycleAntek
PriceFreeFree
Update frequencyEvery 3 monthsEvery 6 weeks — better
AdsNo — betterYes
In-app purchasesYesNo — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS11.0 — better13.0
Further details — not scored
Size8 MB32 MB
Age rating12+17+
DeveloperInstytut Naturalnego Planowania RodzinyEXPLOREIT sp. z o.o.

In-app purchases

2 purchases

INER Cycle

One-time2
  • A one-time interpretation$9.99
  • User account$11.99
None

Antek

No in-app purchases

Questions

Is INER Cycle free?
INER Cycle is free to download, with in-app purchases available.
Is Antek free?
Antek is free to download, with no in-app purchases.
Do INER Cycle or Antek have ads?
Antek shows ads; INER Cycle does not.
Which is updated more often, INER Cycle or Antek?
INER Cycle ships an update every 3 months, and Antek every 6 weeks. Most recently, INER Cycle was updated on January 11, 2026 and Antek on September 20, 2026.

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