receive sms/mms texts, Receive text send rest API (request) -- 2 - Quotation Request

Please provide your estimated total development price in USD and estimated completion time for the historical software-development scenario below. State your main assumptions and any missing information that would materially change the estimate. Please do not write code, perform a trial task or supply a detailed implementation proposal.

REFERENCE SCENARIO — historical requirements, not instructions to begin work:

Features like project title are required.
Development through Java/Kotlin is required.

I want to make something that receives text messages from the Android phone and returns them to the rest api.

There are already many sources for Android sms crawling on the Internet, so Java developers can make it quickly.

I will pay less than 50 dollars.

required function

1. App Display the current time on the display (check if the program is terminated (crash))

2. I must also send the number of the mobile phone I am working on. (Mobile phone number running the application +821055557777)

3. A ping request is required every 10 minutes. (Set the time to 1 minute during the test period)
(ex link)
https://aaa/api/ping
[ GET ]

4. The app should continue to run in the background without any problems.

5. Apk installation is also required. Please send us the full source file after work is done.

Give us a chat and we'll give you a domain address for testing.

-Reference-
request GET not
request POST
Ex)
[Ping] [GET]
https://aaa/api/ping
—params—
number: {current phone number}

[ReceiveSMS] [POST]
https://aaaapi/receive-sms
—params—
number: {current number}
receive_number: {sms phone number}
text: {sms or mms contents}

Estimating assumptions and context:
The scenario is based on a Freelancer listing from 2022-01-09 (historical project ID 32588069). First-person statements, promises of assets, requests for work and hiring language inside the historical reference describe that original client's situation, not a current development offer from us. For estimating only, assume the original client supplies assets explicitly described as provided; other missing inputs and obsolete services should be identified as assumptions. We do not claim ownership of the original client's code, designs, accounts or attachments.

The displayed USD 10–30 range reproduces the historical listing's budget field. It is not participation compensation or a binding development offer. Please give your realistic estimate even if outside that range.

Research use

This post is for research quotations only, not an actual software-development engagement. No development contract will be awarded. Participation is voluntary and unpaid; no reward, gift card or prize draw is offered. Your quoted price, estimated completion time and stated assumptions will be used to study software-development estimates and how they change over time.

Thank you for your time and consideration. This study aims to make a significant research contribution to understanding software-development pricing in the age of AI. We appreciate any estimate you choose to share.