Comparison

objManager vs Congressa

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

Head to head
About

objManager

Features
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"objManager" is a Wavefront .OBJ file viewer (3D models with .obj + .mtl file extension). With "objManager" you will have the ability to: 1) save your 3D models on your mobile device 2) display the 3D models in any times and under any working condition (no Internet connection is required) 3) create images of your 3D model using the HD rendering procedure (with anti-aliasing and image enhancement filters) 4) choose the background color 5) move the light where You want in the 3D world The software does not need an internet connections: each 3D model is stored in your mobile device (using the technology "iTunes File Sharing" or "Open In") and can be read and visualized by objManager. objManager works like the integrated image viewer of the device, you can then: - ZOOM IN / ZOOM OUT the 3D model by dragging two fingers on the screen or using the ZOOM controls - Rotate the 3D model (ROTATE TOOL) by dragging a finger across the screen - Move the 3D model (PAN TOOL) using the PAN controls - Load the 3D model (from the obj files archive of objManager; 3D models are displayed in alphabetical order into the "obj Archive" of "objManager") - Save an infinite number of 3D models into the "obj Archive" of "objManager" (until the physical memory of the device is ended) - Share 3D models ( .obj files ) with File, Google Drive, DROPBOX, iFolders Safe, etc... or from iCloud Drive or other installed apps (cloud sharing: OUT) - Import 3D models from the web links, email attachments, File, Google Drive, DROPBOX, iFolders Safe, iCloud Drive or other installed apps (cloud sharing: IN) Compatibility with: 1) Maya 3D 2) Blender 3) 3D Studio 4) Finger3D 5) FingerCAD 6) Unity 7) 3D modeling software with export to .obj feature (or .obj + .mtl) If "objManager" is not enough for your aim, try the complete 3D modeler: Finger3D. "objManager" can also be used to view the .obj + .mtl models created with Finger3D in full screen (with orientation: Portrait).

About

Congressa

Features
Read full description

Congressa is your conference programme in your pocket. It works without internet, too. WHY IT EXISTS At conferences I carried a folded paper programme in my jacket and unfolded it at every break to check when my talk was and in which room. I wanted the phone to tell me what is on now, what comes next and where to go, even in a congress hall with no signal. A SIMPLE START 1. Get the programme. Scan the QR code from the organiser or a colleague, paste the programme link, enter the conference website or open the PDF. Your name and an access code are optional. 2. For a programme from a website or PDF, check the recognised days, times and item types (lecture, posters, lunch, break, social programme). Fix anything with a tap. 3. That is it. The programme stays on your phone and the reminders are local: what, when and where, always before it starts. WHAT THE APP DOES β€’ NOW – what is on right now, what comes next and your own next item. β€’ PROGRAMME by day, with talks and posters inside their blocks, authors and paper codes. β€’ MY PLAN – star what you do not want to miss; the app warns you about clashes. β€’ I'M IN THE PROGRAMME – if you present, chair or guide, link yourself to your name: your slots are highlighted and reminded first. β€’ REMINDERS BEFORE TALKS – 5, 10, 15, 30 or 60 minutes, or a time of your own from 1 minute to 12 hours before every item. You also choose what the app reminds you about. β€’ ORGANISER ANNOUNCEMENTS – programme changes and important messages right in the app, when the organiser uses a server. β€’ REGISTRATIONS for workshops, dinner or the social programme, with capacity and a waiting list, when the organiser uses a server. β€’ SHARE BY QR CODE – show the code and a colleague has the same programme within seconds, on iPhone and on Android (more below). β€’ SEARCH by surname finds a talk even inside a block, with or without diacritics. β€’ PLACES with directions in Maps, speakers and contact persons with a call button. β€’ EIGHT LANGUAGES – Slovak, Czech, English, German, French, Spanish, Italian and Ukrainian. You choose the app language yourself. β€’ AI RECOGNITION (optional) reads even messy PDFs and websites, with your own API key or through the organiser's server. SHARING BETWEEN IPHONE AND ANDROID The QR code or invitation link from Congressa opens a small web page that takes care of the rest. If your colleague has the app, the programme opens right away. If not, the page sends an iPhone to the App Store and an Android phone to Google Play. After installing, the same programme loads by itself: automatically on Android, on iPhone with the β€œPaste programme link” button on the welcome screen. FOR ORGANISERS On Mac and iPad the app is also the conference back office: it imports the programme from a website, PDF, text or calendar, manages rooms, people, presentations and attendees, and publishes the programme to your own server in one click. The optional server sends push reminders, handles registrations with a waiting list and produces attendance lists. PRIVACY No account, no sign-up, no ads, no tracking. The programme and your plan stay on your device. Data leaves it only when you send it yourself: to the organiser's server that you enter, or to the AI recognition you start. If you share a programme by link, only the programme itself is uploaded to the Congressa server, without your name or plan, and it is deleted 30 days after the conference. FREE AND INDEPENDENT Congressa is an independent app and is not made by the conference organiser. It is free and unrestricted: no ads, no tracking, no locked features, no subscription. One physician builds it in his free time, and it is free so that everyone at a congress can have the programme at hand. If it helped you, you can leave an optional tip (a coffee, a lunch or a dinner). It unlocks nothing and only helps keep the app free for others. Author: JΓ‘n Ε ikuta. The app grew out of his own need at congresses. Contact: congressa_main@icloud.com

Screenshots

objManager4 screens
Congressa4 screens

Verdict

The call

The clearest difference is price: Congressa at Free against objManager's $0.99. Congressa also leads on update cadence (every 3 days vs every 38 months) and device support (3 vs 1). On ads, in-app purchases and iOS requirement there is nothing between them.

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

CostPrice Β· In-app purchases Β· Ads Β· Monetization

Congressa is free to download; objManager costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

objManager ships an update every 38 months, Congressa every 3 days. The most recent releases landed on October 1, 2026 and October 8, 2026 respectively.

Scorecard3 real differences Β· 3 level
objManager versus Congressa: the parameters behind the verdict, then further details
ParameterobjManagerCongressa
Price$0.99Free β€” better
Update frequencyEvery 38 monthsEvery 3 days β€” better
AdsNoNo
In-app purchasesNoNo
DevicesiPhoneiPhone, iPad, Mac β€” better
Requires iOS16.6 β€” better17.0
Further details β€” not scored
Size3 MB7 MB
Age rating4+4+
DeveloperGianluca NataliniJan Sikuta

In-app purchases

None

objManager

No in-app purchases

None

Congressa

No in-app purchases

Questions

Is objManager free?
objManager costs $0.99, with no in-app purchases.
Is Congressa free?
Congressa is free to download, with no in-app purchases.
Do objManager or Congressa have ads?
Neither objManager nor Congressa shows ads.
Which is updated more often, objManager or Congressa?
objManager ships an update every 38 months, and Congressa every 3 days. Most recently, objManager was updated on October 1, 2026 and Congressa on October 8, 2026.

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