If you search for a saju app in Korea, two names come up first: Jeomsin (점신) and Forceteller (포스텔러). Both are large, well-reviewed native apps, both are built around the Four Pillars chart that Koreans call saju and Chinese practitioners call BaZi, and both have grown into much bigger “fortune platforms” with tarot, compatibility and human counselors.
They are not interchangeable, though, and if you do not read Korean one of them is off the table entirely. This guide compares what each app actually offers, what is public about their prices, and where FateChart fits as a free, account-free web alternative. Facts were checked on the two companies’ public websites and App Store listings on 2026-09-11; FateChart is not affiliated with either, and the brand names belong to their owners.
Jeomsin vs Forceteller vs FateChart at a glance
| Jeomsin | Forceteller | FateChart | |
|---|---|---|---|
| Core product | Daily fortune and saju (만세력) | Saju, Zi Wei, I Ching, tarot content catalogue | Full saju/BaZi chart plus Western and Zi Wei charts |
| Free chart without an account | Ad-supported free tier; account for saving and purchases | Some content free; account for profiles and purchases | Yes, everything, no ads |
| Human counselors | 400+ certified phone counselors, first 3 minutes free | Live 1:1 expert chat in the app | No |
| AI reading | Daily AI-based readings (App Store description) | “Forceteller AI” saju and tarot in the calendar app | AI reading, US$3.99 for 10 credits |
| Languages | Korean | Korean, English, Japanese | 8, including Korean, Chinese and Vietnamese |
| Platforms | iOS, Android, web | iOS, Android, web | Web (works on any phone) |
| Published reading price | Not stated on public pages | Coin-based, prices not stated on public pages | US$3.99 / 10 credits, US$14.99 / 60 |
| App Store rating (2026-09-11) | 4.7 stars, about 114,000 ratings | 4.6 stars, about 14,700 ratings | Web app, no listing |
What Jeomsin does well
Jeomsin, launched in 2015 by Techlabs, describes itself as a fortune platform for 19 million users and has about 114,000 App Store ratings at 4.7 stars. Its defining feature is the counselor marketplace: more than 400 certified phone counselors covering saju, shamanic readings, tarot and psychological counseling, with the first three minutes free. Around that it wraps a full Korean lifestyle bundle: today’s fortune, a saju calendar with luck pillars, compatibility with saved contacts, tarot and face reading.
Its limits are clear from the table. It is Korean-only, the free tier carries ads, the calculation method is not published, and prices for readings are shown inside the app rather than on public pages.
What Forceteller does well
Forceteller is the broader catalogue. It covers saju, Zi Wei Dou Shu, I Ching, tarot, astrology content and celebrity saju, and claims more than 6,000 free and paid items. Its separate calendar app handles fine-grained time rules such as late-night hour boundaries and daylight saving. Unusually for a Korean app, it runs real English and Japanese sites, so it is the pick if you read one of those but not Korean. It has about 14,700 App Store ratings at 4.6 stars and offers live 1:1 expert chat.
Its coins-based pricing is not published on public pages, saving profiles needs an account, and there is no dedicated methodology page, although time rules are described in the app listing.
Which app should you choose?
- Choose Jeomsin if you read Korean, want a daily fortune habit, and value talking to a human counselor by phone.
- Choose Forceteller if you want the widest catalogue of Eastern systems in one native app, or you need the Japanese or English version.
- Choose FateChart if you want the complete saju chart free without ads or an account, want to see the same birth in Western astrology and Zi Wei Dou Shu side by side, need Chinese or Vietnamese, want a published calculation method, and prefer a public pay-as-you-go price for a reading.
Where FateChart fits
FateChart runs in the browser. Enter your birth date, time and place and you get the four pillars, day master, ten gods and ten-year luck pillars immediately, with no signup and no ads. The same birth data is shown as a Western natal chart and a Zi Wei Dou Shu chart. The calculation rules are written up on the methodology page so you can check the pillars against any other calculator.
An AI reading is optional and costs US$3.99 for 10 credits. It is generated by AI and labeled as such, and it is meant for reflection and entertainment, not advice. If you are new to the system, the what is BaZi guide explains the four pillars, and the BaZi calculator is the place to start.
For a feature-by-feature comparison against each app, see FateChart vs Jeomsin and FateChart vs Forceteller.
FAQ
Is saju the same as BaZi? Yes. Saju (사주) is the Korean name for the Four Pillars of Destiny, called BaZi (八字) in Chinese. The calendar maths is the same; the interpretive traditions differ slightly.
Is Jeomsin or Forceteller more accurate? The four pillars are a deterministic calendar calculation, so any correct calculator gives the same pillars. Interpretations, whether by a counselor or an AI, cannot be verified for accuracy on any app.
Can I use Jeomsin in English? Jeomsin is Korean-only. Forceteller has English and Japanese sites. FateChart supports eight languages.
Do these apps store my birth data? Neither Jeomsin nor Forceteller states its storage location on public pages. FateChart calculates the chart without requiring an account.