Comparison

IEQ Calculator (Resident) vs Chinese Language Learning+

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

Head to head
About

IEQ Calculator (Resident)

Features
Read full description

IEQ calculator (Apartment) provides you an easier alternative to estimate the indoor environmental quality (IEQ) in residential environment. You can examine the IEQ performance of an apartment by simply inputting several preset indoor environment parameters. The environmental performance of the apartment is expressed via a 5-star benchmarking scale (i.e. 5-stars BEST apartment, 1-star WORST apartment). This application is particularly useful for tenants to evaluate the IEQ in their own livings. Development team: Dr. LT Wong Dr. KW Mui Mr. HC Yu Mr. CT Cheung IEQ Research Team, Department of Building Services Engineering, The Hong Kong Polytechnic University Sources: Lai ACK, Mui KW, Wong LT, Law LY (2009). An evaluation model for indoor environmental quality (IEQ) acceptance in residential buildings. Energy and Building 41, 930 – 936.

About

Chinese Language Learning+

Master Mandarin Chinese with interactive mini-lessons covering Pinyin, vocabulary, listening, speaking, reading, and writing. Designed by CSL teachers, it prepares you for HSK exams with speech assessment and handwriting practice.

Highlights
  • 500+ mini-lessons
  • HSK curriculum alignment
  • Automatic speech assessment
  • Chinese character handwriting
  • Gamified learning style
  • Offline learning support
Features
Read full description

App is the must-have app for all Mandarin Chinese beginners. This app includes 500+ fun and engaging mini-lessons that will teach you everything from Pinyin to Chinese vocabulary and train your listening, speaking, reading, and writing skills. App's core curriculum is designed by professional CSL (Chinese as a Second Language) teachers in accordance with the unique characteristics of Mandarin Chinese. The curriculum covers vocabulary required to pass HSK. Automatic Chinese speech assessment, Chinese character handwriting and pinyin tone animation technologies are used in app to make language learning more convenient, exciting and effective. With app, complete beginners have a chance to learn Mandarin Chinese systematically and quickly reach a conversational level. Features: - Professionally designed curriculum: optimized for total beginners and customized for the Chinese language structure - Automatic speech assessment: start speaking Chinese immediately - Learn by playing: lessons and challenges are presented in a gamified style - Multiple practice modes: original exercise types will help you memorize new information and reinforce learning faster than with textbooks - Bite-sized lessons: perfect for morning commutes and lunch breaks - Offline learning: no internet connection required - Both simplified and traditional characters are supported - Display Chinese as pinyin, characters or both What are you going to learn? - 300+ sentence patterns - 1000+ keywords and phrases - 1500+ essential Chinese characters App supports learning Chinese from languages: ENGLISH, VIETNAMESE Download now and start your Chinese studying anywhere at your own pace! Please read Term of Use: https://thanhbkap.github.io/Chinese-Games/

Screenshots

IEQ Calculator (Resident)2 screens
Chinese Language Learning+4 screens

Verdict

The call

The clearest difference is in-app purchases: IEQ Calculator (Resident) at none against Chinese Language Learning+'s 8. IEQ Calculator (Resident) also leads on ads (none vs shown) and iOS requirement (13.0 vs 15.0). Chinese Language Learning+'s advantage is update cadence (monthly vs every 37 months). 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. Chinese Language Learning+ sells 8 in-app purchases, starting at $1.99 per month. IEQ Calculator (Resident) asks for nothing beyond the download.

UpkeepUpdate frequency

IEQ Calculator (Resident) ships an update every 37 months, Chinese Language Learning+ monthly. The most recent releases landed on May 16, 2026 and September 17, 2026 respectively.

Scorecard4 real differences · 6 level
IEQ Calculator (Resident) versus Chinese Language Learning+: the parameters behind the verdict, then further details
ParameterIEQ Calculator (Resident)Chinese Language Learning+
PriceFreeFree
Rating4.5 (6 ratings) — better
Positive reviews100.0% of reviews
Number of ratings6 — better
Update frequencyEvery 37 monthsMonthly — better
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationFree with in-app purchases
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS13.0 — better15.0
Further details — not scored
Size1 MB200 MB
Age rating4+4+
DeveloperFishball StudioDEVWORLD VIETAM COMPANY LIMITED

In-app purchases

None

IEQ Calculator (Resident)

No in-app purchases

8 purchases

Chinese Language Learning+

Subscriptions7
  • Learning Premium Monthly Plan$1.991 Month
  • Three Months VIP$1.993 Months
  • One Month VIP3 Days trial$4.991 Month
Show 4 more
  • Learning Premium HalfYear Plan$5.996 Months
  • Learning Premium Annual Plan$9.991 Year
  • Six Months VIP3 Days trial$24.996 Months
  • 1 Year VIP3 Days trial$49.991 Year
One-time1
  • No ads Pack$14.99

Questions

Is IEQ Calculator (Resident) free?
IEQ Calculator (Resident) is free to download, with no in-app purchases.
Is Chinese Language Learning+ free?
Chinese Language Learning+ is free to download, with in-app purchases available.
Do IEQ Calculator (Resident) or Chinese Language Learning+ have ads?
Chinese Language Learning+ shows ads; IEQ Calculator (Resident) does not.
Which is updated more often, IEQ Calculator (Resident) or Chinese Language Learning+?
IEQ Calculator (Resident) ships an update every 37 months, and Chinese Language Learning+ monthly. Most recently, IEQ Calculator (Resident) was updated on May 16, 2026 and Chinese Language Learning+ on September 17, 2026.

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